By the early years of the twentieth century, astronomers regarded photography as one of the most valuable tools at their disposal, a technique which not only provided an accurate and reliable representation of astronomical phenomena, but also radically changed the role of the astronomical observer. Herbert Hall Turner, professor of astronomy at Oxford, wrote in 1905: ‘The wonderful exactness of the photographic record may perhaps best be characterised by saying that it has revealed the deficiencies of all our other astronomical (...) apparatus – object-glasses and prisms, clocks, even the observer himself.’ H. C. Russell, government astronomer in Sydney, suggested that photography might in the future make the observer redundant: ‘In many cases the observer must stand aside while the sensitive photographic plate takes his place and works with the power of which he is not capable… I feel sure that in a very few years the observer will be displaced altogether.’ Such visions were not uncommon at the time, emanating from the trust invested in the photographic process after the spectacular achievements of the late nineteenth century. (shrink)

What is the relation between things and theories, the material world and its scientific representations? This is a staple philosophical problem that rarely counts as historically legitimate or fruitful. In the following dialogue, the interlocutors do not argue for or against realism. Instead, they explore changing relations between theories and things, between contested objects of knowledge and less contested, more everyday things. Widely seen as the life sciences' first general theory, the cell theory underwent dramatic changes during the nineteenth century. (...) The dialogue establishes that each successive version of the cell theory was formulated -- each identity of the object cell was formed -- around a different material : cork, cartilage, eggs in cleavage, muscle. Such things thus serve as exemplary materials, in ways not described by standard concepts like induction, theory -testing, theory -laden observation, and construction. Still, how can theories and perspective possibly be honed on things if these are apprehended differently by different observers according to their interests, training, culture, or indeed theories? The second part of the dialogue addresses this problem, partly through the verbal and visual schemata that were used by nineteenth-century microscopists and that are comparable to schemata in the visual arts. The third part of the dialogue considers the exemplary materials as a historical sequence, itself needing explanation. Theoretical change devolved partly from wider histories and geographies of the prevalence, availability, or scientific and cultural status of materials such as plants, animals, and muscle. (shrink)

This article investigates the maps of the moon produced in the mid-seventeenth century by Jesuit Giambattista Riccioli and Johannes Hevelius, whose cartographic projects competed for widespread acceptance. Although Hevelius’s Selenographia was applauded for its many detailed, self-engraved pictures of the moon, his cartography and proposed nomenclature were supplanted by Riccioli’s as offered in Almagestum novum, in spite of the latter’s simplistic pictures and promotion of geocentric cosmology. Exploring this paradox through pictorial analysis, three types of images common to both Selenographia (...) and Almagestum novum are compared, employing an analytical tool developed by Svetlana Alpers in The art of describing. A focus on this debate exposes the tensions evoked by new technologies of vision and competing cultures of visual epistemology in seventeenth-century astronomy. As both selenographers grappled with questions about the role of representation and what kinds of knowledge could be generated visually, the successes and failures of their competing projects present implications for the course of visual astronomy, as well as for our understanding of the use of ‘visual technologies’ in a period of controversy.Keywords: Johannes Hevelius; Giambattista Riccioli ; Svetlana Alpers; Astronomy; Early modern; Moon maps; Visual culture; Images in science. (shrink)

The phenomenon of the Giant's Causeway in the north of Ireland has attracted much attention over five centuries. This essay recounts the formative years between 1688 and 1708 of the Giant's Causeway as a field site and ‘philosophical landscape’ in the light of recent research on the historical geographies of scientific knowledge. This research has provided new perspectives on field science, emphasizing the spatial character of the field and its discursive formation in different spaces. A view of the field as (...) a self-contained unit in which science is practised is rendered problematic. Instead, it is seen as part of a network of intersecting locales within which scientists and science circulate. This essay draws upon this work, exploring and mapping the spaces and techniques used by late seventeenth-century natural philosophers in London and Dublin to generate observational and conceptual knowledge of the Giant's Causeway. In doing so, the paper contributes to an understanding of the spaces of natural philosophy in the seventeenth century, of the knowledge networks within which the virtuosi operated and of the earth science field site. (shrink)

Art and science is an area of research that has strengthened recently, mainly due to the impact of interdisciplinary work. At the same time, approaches between the humanities and the sciences have succeeded in re-signifying traditional views towards critical positions such as postcolonialism, especially in the colonially so-called “Global South”. In this paper, we want to review the case of the work of the Mexican artist Octavio Ocampo through works that present the case of biological and cultural evolution. From this, (...) we want to reflect on the public perception of science in Mexico, the tensions between social and natural sciences, and the urgent need to strengthen the postcolonial discourse in scientific practice. (shrink)

Engineering sketches and drawings are the building blocks of technological design and production. These visual representations act as the means for organizing the design to production process, hence serving as a "social glue" both between individuals and between groups. The author discusses two main capacities such visual representations serve in facilitating distributed cognition in team design work As conscription devices, they enlist and organize group participation. As boundary objects, they facilitate the reading of alternative meanings by various groups involved in (...) the design process. The introduction of computer-aided design into this visual culture of engineering restructures relationships between workers in ways that can hamper the flexibility necessary for these crucial capacities to take place. The data are drawn from a study of the daily practices of engineers engaged in redesigning a turbine engine package. The method is participant observation. (shrink)

In the Parthenon frieze, the time of mortals and the time of gods seem to merge. Dipesh Chakrabarty has argued that with the advent of the Anthropocene the times of human history and of the Earth are similarly coming together. Are humans entering the ‘monumental time’ of the Earth, to stand alongside the Olympian gods of the other geological forces? This article first looks at the cultural shifts leading to the modern idea of separate human and Earth histories. It examines (...) the changing use of monuments to mediate between human and other temporalities. It explores the use of ‘stratigraphic sections’ as natural monuments to mark transitions between the major time units of Earth history, and the erection of intentional monuments nearby. It suggests that the Anthropocene, as a geological epoch-in-the-making, may challenge the whole system of monumental semiotics used to stabilize our way of thinking about deep time. (shrink)

In this paper, I investigate the variety and richness of the taxonomical practices between the end of the nineteenth and the early twentieth centuries. During these decades, zoologists and paleontologists came up with different quantitative practices in order to classify their data in line with the new biological principles introduced by Charles Darwin. Specifically, I will investigate Florentino Ameghino’s mathematization of mammalian dentition and the quantitative practices and visualizations of several German-speaking paleontologists at the beginning of the twentieth century. In (...) so doing, this paper will call attention to the visual and quantitative language of early twentieth-century systematics. My analysis will therefore contribute to a prehistory of the statistical frame of mind in biology, a study which has yet to be written in full. Second, my work highlights the productive intertwinement between biological practices and philosophical frameworks at the turn of the nineteenth century. Deeply rooted in Kantian bio-philosophy, several biologists sought to find rules in order to apply ordering principles to chaotic taxonomic information. This implies the necessity to investigate the neglected role of Kantian and Romantic bio-philosophy in the unfolding of twentieth-century biology. (shrink)

Archaeology, like most sciences that rely on stratigraphic excavation for studying the past, tends to conceptualize this past as lying deep underneath the ground. Accordingly, chronologies tend to be depicted as a movement from bottom to top, which contrast with sciences that illustrate the passage of time horizontally. By paying attention to the development of the visual language of disciplines that follow stratigraphy, I show how chronologies get entangled with other temporalities, particularly those of writing. Relying on recent ethnographic work (...) with archaeologists, the analysis reveals that excavation emerges as a double vertical movement of downward destruction and upward reconstruction that coincides with a systematic dissociation of time and space that has important effects for the understanding of the formation of sites. I conclude by looking at some of the implications of this dissociation for contemporary theoretical discussions, particularly those that emerged after the phenomenological push to horizontalize the discipline. Challenging this dissociation, I argue that the conceptualization of time in science should be understood as a process that depends on the body and unfolds in movement. (shrink)

Recent philosophical analyses of the epistemic dimension of images in the sciences show a certain trend in acknowledging potential roles of these images beyond their merely decorative or pedagogical functions. We argue, however, that this new debate has yet paid little attention to a special type of pictures, we call ‘visual metaphor’, and its versatile heuristic potential in organizing data, supporting communication, and guiding research, modeling, and theory formation. Based on a case study of Conrad Hal Waddington’s epigenetic landscape images (...) in biology, we develop a descriptive framework applicable to heuristic roles of various visual metaphors in the sciences. (shrink)

The Danish amateur scholar Christian Jürgensen Thomsen has often been described as a founder of modern “scientific” archaeology. Thomsen's innovation, this essay argues, reflects developments within neighboring fields, such as philology and history. He reacted against historians who limited themselves to histories of texts and therefore abandoned the earliest human history. Instead, he proposed a new history of objects, which included the entire history of humankind. Thomsen's work as director of the Royal Museum of Nordic Antiquities in Copenhagen was especially (...) important for this renewal. The arrangement of artifacts not only helped him formulate his theories, but also allowed him to present his arguments in a language of objects. At the same time, Thomsen's definition of archaeology as a museum science placed his branch of archaeology in a closer relationship with other museum sciences, such as geology and comparative anatomy. From the 1840s, Thomsen's museum became a model for how the study of human artifacts could deliver scientific insights into human nature and the laws of human development. (shrink)

This paper examines how the 19th-century British naturalist Alfred Russel Wallace used biogeographical mapping practices to draw a boundary line between Malay and Papuan groups in the colonial East Indies in the 1850s. Instead of looking for a continuous gradient of variation between Malays and Papuans, Wallace chose to look for a sharp discontinuity between them. While Wallace's "human biogeography" paralleled his similar project to map plant and animal distributions in the same region, he invoked distinctive "mental and moral" features (...) as more decisive than physical ones. By following Wallace in the field, we can see his field mapping practices in action -- how he conquered the problem of local particularity in the case of human variation. His experiences on the periphery of expanding European empires, far from metropolitan centers, shaped Wallace's observations in the field. Taking his cues from colonial racial categories and his experiences collaborating with local people in the field, Wallace constructed the boundary line between the Malay and Papuan races during several years of work in the field criss-crossing the archipelago as a scientific collector. This effort to map a boundary line in the field was a bold example of using the practices of survey science to raise the status of field work by combining fact gathering with higher-level generalizing, although the response back in the metropole was less than enthusiastic. Upon his return to Britain in the 1860s, Wallace found that appreciation for observational facts he had gathered in the field was not accompanied by agreement with his theoretical interpretations and methods for doing human biogeography. (shrink)

This paper focuses on the relationships between Spanish and Portuguese geologists during the second half of the nineteenth century, and their cooperation in Iberian and European scientific projects, with particular emphasis on the geological map of Europe, whose publication, in 1896, was a symbolic demonstration of Prussia's capacity to dominate the whole continent. We argue that the period from 1857 to 1896 defined a cycle in the relationships between Spanish and Portuguese geologists marked by common generational aspirations, converging intellectual pursuits (...) and political and ideological affinities associated with the intellectual and political movements which stirred the cultural and political life of both Iberian countries. At a time when the unification of Iberia was being discussed on both sides of the Spanish–Portuguese border, this background favoured and shaped cooperation between the Spanish and Portuguese Geological Surveys, in particular their participation in the geological map of Europe, which, nevertheless, coincided with the end of this cycle in Iberian geology. (shrink)

ArgumentSince the linguistic turn, the role of rhetoric in the circulation and the popular representation of knowledge has been widely accepted in science studies. This article aims to analyze not a textual form of scientific rhetoric, but the crucial role of materiality in scientific debates. It introduces the concept ofmaterial rhetoricto understand the promotional regimes in which material objects play an essential argumentative role. It analyzes the phenomenon by looking at two students of prehistory from nineteenth-century Belgium.In the study of (...) human prehistory and evolution, material data are either fairly abundant stone tools or very scarce fossil bones. These two types of material data stand for two different strategies in material rhetoric. In this article, the first strategy is exemplified by Aimé Rutot, who gathered great masses of eoliths. The second strategy is typified by the example of Julien Fraipont, who based his scientific career on only two Neanderthal skeletons. Rutot sent his “artifacts” to a very wide audience, while Fraipont showed his skeletons to only a few selected scholars. Unlike Rutot, however, Fraipont was able to monitor his audience's interpretation of the finds by means of personal contacts. What an archaeologist gains in reach, he or she apparently loses in control. In this article we argue that only those scholars who find the right balance between the extremes of reach and control will prove to be successful. (shrink)

SummaryThis article surveys recent scholarship on the early history of British geology. It finds that many of the developments called for a decade ago by Dr Eyles and Dr Rappaport have not yet been realized. However, there has been progress in the broader understanding of geological ideas in their historical context, and a start has been made on the social history of the science. Some suggestions are offered as to a field of problems for the future, and a selective bibliography (...) of secondary materials, thematically arranged, is appended. (shrink)

The ArgumentThere can be no doubt about the moral and epistemological significance of what Shapin calls the “physical place” of the scientific laboratory. The physical place is defined by the locales, barriers, ports of entry, and lines of sight that bound the laboratory and separate it from other urban and architectural environments. Shapin's discussion of the emergence of the scientific laboratory in seventeenth-century England provides a convincing demonstration that credible knowledge is situated at an intersection between physical locales and social (...) distinctions. In this paper I take up Shapin's theme of the “siting of knowledge production,” but I give it a different treatment – one based on ethnomethodological studies of work. Without denying all that can be witnessed in the spectacle of the scientist at the bench and of the architectural habitat of the bench, I argue that the “place” of scientific work is defined by locally organizedtopical contextures. The paper describes two examples of such spatial orders – “opticism” and “digitality” – associated with distinct complexes of equipment and practice. These topical spaces might initially be viewed as “ideal” or “symbolic” spaces, but I argue that they are no less material than the “physical setting” of the laboratory; indeed, they are the physical setting. (shrink)

In 1961, Lee Chin Eng jumpstarted the reef hobby, a hobby dedicated to the modeling of coral reefs in captivity, with an article in Tropical Fish Hobbyist. He illustrated the article with eight photographs; these images were meaningful to the hobbyists viewing them and they conveyed both information about the tank system and also claims about Lee's expertise. This paper examines three genres of photographs—landscapes, active, and passive portraiture—that appeared in Lee's article and how and why they have proliferated in (...) the reef hobbyist community over the last sixty years. By tracing the history of these genres, we can better understand natural knowledge producers rely on photographs to exchange knowledge and cement community identity. (shrink)

For centuries, philosophers of time have produced texts containing words and pictures. Although some historians study visual representations of time, I have not found any history of philosophy on pictures of time within texts. This paper argues that studying such pictures can be rewarding. I will make this case by studying pictures of time in the works of Leibniz, Arthur Eddington and C. D. Broad, and argue they play subtle roles. Further, I will argue that historians of philosophy more widely (...) could benefit from paying more attention to pictures. (shrink)

By resituating Alexander von Humboldt in the “working world” of mining, this essay offers a case study of the way in which industry has shaped practice and theory in the history of science. While Humboldt’s experience as a miner in Saxony and Prussia provided him a venue in which to study fossilized vegetation, revealing a fundamental link between the migrations of plants and of peoples, industrial concerns about miners’ safety inspired a study of the interplay between plants and people that (...) shaped his later articulation of the verticality of plant distribution. Moreover, the cartographic methods Humboldt employed during his American journey depended as much on drawing practices indebted to mining as they did on patterns of vertical mobility above and below the surface of the earth. These arguments ultimately encourage a departure from “Humboldtian Science,” a term that has veiled an originally Prusso-Saxon science beneath a set of Anglo-American connotations. (shrink)

ArgumentThe article examines the organizational patterns of nineteenth-century Swiss Alpine geology. It argues that early and middle nineteenth-century Swiss geognosy was shaped in genealogical terms and that the patterns of genealogical reasoning and practice worked as a vehicle of transmission toward the generalization of locally gained empirical knowledge. The case study is provided by the Zurich geologist Albert Heim, who, in the early 1870s, blended intellectual and patrilineal genealogies that connected two generations of fathers and sons: Hans Conrad and Arnold (...) Escher, Albert and Arnold Heim. Two things were transmitted from one generation to the next, a domain of geognostic research, the Glarus Alps, and a research interest in an explanation of the massive geognostic anomalies observed there. The legacy found its embodiment in the Escher family archive. The genealogical logic became visible and then experienced a crisis when, later in the century, the focus of Alpine geology shifted from geognosy to tectonics. Tectonic research loosened the traditional link between the intimate knowledge of a territory and the generalization from empirical data. (shrink)

ArgumentA growing cross-disciplinary literature has acknowledged the importance of verbal-visual interaction in the creation and communication of scientific texts. I contend that the proper understanding of these texts must flow from a hermeneutic model that takes verbal-visual interaction seriously, one that is firmly grounded in cognitive constraints and affordances. The model I propose has two modules, one for perception, derived from Gestalt psychology, the other for cognition, derived from Peirce's semiotics. I apply this model to an important but largely neglected (...) text in the history of nineteenth-century science, Charles Lyell'sThe Geological Evidences of the Antiquity of Man, and to two accounts by well-respected historians of science, both of the same key discovery in quantum physics. In doing so, I hope to demonstrate the advisability of incorporating the exegetical practices my model entails into the everyday practices of historians of science. (shrink)

The ArugmentThis essay answers a single question: what was Robert Hooke, the Royal Society's curator of experiments, doing in his well-known 1665 work,Micrographia?Hooke was articulating a “universal cure of the mind” capable of bringing about a “reformation in Philosophy,” a change in philosophy's interpretive practices and organization. The work explicated the interpretive and political foundations for a community of optical instrument users coextensive with the struggling Royal Society. Standard observational practices would overcome the problem of using nonstandard instruments, while inherent (...) inrepresentation– the interpretive practice championed in the text – were important theological and political meanings. Hooke's kind of experimental philosophy undermined the claims made by “atheists” and “enthusiasts” – the enemies of the restored church and state – while also producing useful knowledge. Equally important, Hooke modeled the community described inMicrographiaupon the classicalres publica, but his community made important concessions to Restoration political realities, especially the growing role of commercial or transactional relationships. (shrink)

There is a rather striking video currently used in police training. A firearms officer is caught on video shooting an armed suspect. The officer then gives his account of what happened, and there is no suggestion that he is tying to fabricate evidence. He says that he shot the suspect once; his partner says that he fired two shots. On the video we see four shots being deliberately fired. Memory, it seems, is an unreliable witness in situations of stress.

The purpose of this study is to examine how trends in the use of images in modern life science journals have changed since the spread of computer-based visual and imaging technology. To this end, a new classification system was constructed to analyze how the graphics of a scientific journal have changed over the years. The focus was on one international peer-reviewed journal in life sciences, Cell, which was founded in 1974, whereby 1725 figures and 160 tables from the research articles (...) in Cell were sampled. The unit of classification was defined as a graphic and the figures and tables were divided into 5952 graphics. These graphics were further classified into hierarchical categories, and the data in each category were aggregated every five years. The following categories were observed: data graphics, explanation graphics, and hybrid graphics. Data graphics increased by more than sixfold between 1974 and 2014, and some types of data graphics including mechanical reproduction images and bar charts displayed notable changes. The representation of explanatory graphics changed from hand-painted illustrations to diagrams of Bezier-curves. It is suggested that in addition to the development of experimental technologies such as fluorescent microscopy and big data analysis, continuously evolving application software for image creation and researchers’ motivation to convince reviewers and editors have influenced these changes. (shrink)

This paper raises the question of the prominence and use of statistical graphs in science, and argues that their use in problem solving analysis can best be understood in an ‘interactionist’ frame of analysis, including bio-emotion, culture, social organization, and environment as elements. The frame contrasts both with philosophical realism and with social constructivism, which posit two variables and one way causal flows. We next posit basic differences between visual, verbal, and numerical media of perception and communication. Graphs are thus (...) seen as key interactive sites where different media are transformed into more interpretable forms. Examples are taken from Limnology where numbers are transformed into graphs to find patterns in them, and thus, by implication in the environmental materials from which the numerical measurements were taken. Their revisualization by passes a human cognitive limitation, for the direct analysis — interpretation of lists and tables of numbers, visual imaging being a cognitive strength. Sense of problem, conceptual repertoire, and social relations are seen to direct this pattern search and interpretive process. (shrink)

Like other aspiring geologists in the 1830s, Darwin focused heavily on the rising and falling of the earth's crust. I use his time in the Andes to underscore the importance he placed on larger questions of vertical movement, which mountains helped to solidify in his mind. His most impressive ramblings occurred in 1835 on two high passes in the Andes. Prior to his upland journey, he was well prepared to see the gradual movement of the earth's crust, but his time (...) in the mountains honed his vertical vision. His actual travels up and over enabled him to think more clearly about rise and fall, and how corresponding geographies could link the past to the present. Mountains were instructive backdrops to his theorizing, partly because he traveled through them, but also because his time there, linked with other geographies, became a means to foster his thinking both spatially and temporally. He did not think about mountains, but with them and through them. He is a good example of the broader vertical consciousness that directed many sciences at this time. (shrink)

In concluding his ‘Autobiographical notes’, Albert Einstein explained that the purpose of his exposition was to ‘show the reader how the efforts of a life hang together and why they have led to expectations of a definite form’. Einstein's remarks tell of a coherence between personal ‘strivings and searchings’ and scientific activity, which has all but vanished in the midst of the current trend of social constructivism in history of science. As Nancy Nersessian recently pointed out, in the process of (...) illuminating complex relationships between scientific activity and its social context, ‘socio-historical analysis has “black-boxed” the individual scientist’. Has the pendulum swung too far? In reaction to the preceding great-man hagiographie approach to the history of science, the social constructivists have largely ‘thrown the baby out with the bathwater’; consideration of individual scientists' personal approaches to science was unnecessarily expunged with the removal of ‘genius’ as an explanatory tool. (shrink)

Recent literature on the role of pictorial representation in the life sciences has focused on the relationship between detailed representations of empirical data and more abstract, formal representations of theory. The standard argument is that in both a historical and epistemic sense, this relationship is a directional one: beginning with raw, unmediated images and moving towards diagrams that are more interpreted and more theoretically rich. Using the neural network diagrams of Warren McCulloch and Walter Pitts as a case study, I (...) argue that while in the empirical sciences, pictorial representation tends to move from data to theory, in areas of the life sciences that are predominantly theoretical, when abstraction occurs at the outset, the relationship between detail and abstraction in pictorial representations can be of a different character. (shrink)

Works in science and technology studies have repeatedly pointed to the importance of the visual in scientific practice. STS has also explicated how embodied practice generates scientific knowledge. I aim to supplement this literature by pointing out how sound and hearing are integral aspects of experimentation. Sound helps define how and when lab work is done, and in what kinds of spaces. It structures experimental experience. It affords interactions between researchers and instruments that are richer than could be obtained with (...) vision alone. And it is a site for tacit knowledge, providing a resource for the replication of results, and the transmission of knowledge, and the construction of social boundaries within instrumental communities. (shrink)

This article deals with the nature of the visual representation of knowledge with historical and contemporary examples of the analysis of its defining characteristics as epistemic, heuristic and communicative representation. With this aim along the text we explain the visual material features and their relationship with the elaboration of scientific knowledge. And, finally, we must take into account the status of scientific representation in the complex of contemporary visual culture claiming the urgent need to address this type of particular representation (...) of visuals with greater intensity from its epistemic, heuristic and communicative nature. (shrink)

In his comprehensive survey of the work of William Herschel, published in the Annuaire du Bureau des Longitudes for 1842, Dominique Arago argued that the life of the great astronomer ‘had the rare privilege of forming an epoch in an extended branch of astronomy’. Arago also noted, however, that Herschel's ideas were often taken as ‘the conceptions of a madman’, even if they were subsequently accepted. This fact, commented Arago, ‘seems to me one that deserves to appear in the history (...) of science’. From the time Herschel published his first paper in the Philosophical transactions in 1781, he was subjected to the suggestion of lunacy. His patron and friend William Watson, told him that after his claims for the extraordinary power of his telescopes, ‘your prognosis that some would think you fit for Bedlam has been verified’. On learning of Herschel's supremely accurate new micrometer, the astronomer Alexander Aubert exclaimed to Herschel that ‘we would go to Bedlam together’: Aubert wrote to Herschel in January 1782 that he should ‘mind not a few jealous barking puppies: a little time will clear up the matter, and if it lays in my power you would not be sent to Bedlam alone, for I incline much to be of the party’. (shrink)

This paper examines cave environments as unique spaces of knowledge production and shows how visualizations of natural cavities in maps came to be powerful tools in scientific reasoning. Faced with the challenge of limited vision, mapmakers combined empiricism and imagination in an experimental setting and developed specific translation strategies to deal with the uncertain origin of underground objects and the shifting boundaries between the known and the unknown. By deconstructing this type of cartographic representation, which has barely been studied, this (...) paper furnishes surprising insights into the scholarly practices and tools used to deal with this considerable epistemic uncertainty and to signal credibility and trust to potential users. The array of maps used for this study includes both archival and published sources, depicting caves in Europe, America and Siberia. (shrink)

The main objective of this paper was to analyze gender representation in Mexican elementary education materials from 1960 to the present, particularly on the topic of human evolution, as this is a fundamental subject for the understanding of our ancestry as a species, and for its relationship with questions about human nature. Using gender as a category and an approach that included both qualitative and quantitative methods, a comparison of three generations of textbooks for elementary school and “monographs” was carried (...) out. The results show a deeply entrenched and systemic problems of gender representation in Mexican pedagogical tools past and present. (shrink)

Recent philosophical analyses of the epistemic dimension of images in the sciences show a certain trend in acknowledging potential roles of these images beyond their merely decorative or pedagogical functions. We argue, however, that this new debate has yet paid little attention to a special type of pictures, we call ‘visual metaphor’, and its versatile heuristic potential in organizing data, supporting communication, and guiding research, modeling, and theory formation. Based on a case study of Conrad Hal Waddington’s epigenetic landscape images (...) in biology, we develop a descriptive framework applicable to heuristic roles of various visual metaphors in the sciences. (shrink)