The essay will elaborate on the following aspects of the selected topic: 1) Goethe's scepticism of language: An apprehension of the almost unbridgeable gap between language and the world of objects constitutes the starting point in his approach to language. — 2) The paradoxical nature of the objective world: The paradoxical character of the realm of natural science is a second starting point: Goethe first attempts the logically ‘impossible’, namely to capture simultaneously that which at a higher level is identical (...) and at the empirical level visibly distinct, that which is both static and changing, the uniformity of the kingdom of nature and its multiplicity; he proceeds to undertake a translation of this into a mode of representation accessible to the mind's eye. — 3) Goethe's scientific models of representation: Goethe's models, which graduate from variation of synonym through the exploitation of multifarious fields of imagery to the free juxtaposition of different text-forms each providing its own perspective, serve to resolve the problems outlined in 1 and 2. Form is cognition, its value being not principally aesthetic but heuristic. 4) The scope and influence of Goethe's language: The product of Goethe's scientific efforts is a standard transparent language, both vivid and explanatory, capable of concisely delineating exceedingly complex circumstances and interactions. Even in some spheres of science its influence extended to the beginning of the twentieth century, facilitating the dialogue between disciplines. — 5) The limitations of this language: One of the clear limitations of this language shows itself to be its close adhension to visual perception: its dread both of abstraction, with its disregard of objective fields of reference, and of the formalised language of mathematics. — 6) The shadow of abstraction: Since the eighteenth century the world has lived in the increasingly dark shadow of an abstraction, which has assumed new dimensions in the laboratory-like world of today. — 7) Distance to Goethe: From a present-day persepective Goethe's science appears as distant legend. (shrink)

Summary Colourful plant images are often taken as the icon of natural history illustration. However, so far, little attention has been paid to the question of how this beautiful colouring was achieved. At a case study of the eighteenth-century Nuremberg doctor and botanist, Christoph Jacob Trew, the process of how illustrations were hand-coloured, who was involved in this work, and how the colouring was supervised and evaluated is reconstructed, mostly based on Trew's correspondence with the engraver and publisher of his (...) books, Johann Jacob Haid in Augsburg. Furthermore, the question of standardizing colours, their uses and their recipes is discussed at two examples of the same time period: the colour charts of the Bauer brothers, arguably the most renowned botanical draughtsmen of the period, and the colour tables by the Regensburg naturalist, Jacob Christian Schaeffer. Hand-colouring botanical illustrations, it is argued, was far from a straightforward task but confronted botanists and their employees with a plethora of practical and methodological problems, to which different solutions were developed in the course of time. Analysing these problems and solutions reveals some new and interesting aspects of the practices of eighteenth-century botany and of the production of scientific illustrations in general. (shrink)

In three steps, the polyvalent phenomenon of global plant transfer will be analysed. Starting from the model of cultural transfer, the latter one will be discussed in combination with network research. Finally, the connection of various instances of transfer such as botanical gardens, ships and islands will be established. The fact that botanists take part in the process of transfer increasingly and from the middle of the 18th century onwards control the plant transfers in all phases emphasises the entwinement of (...) science and colonialism. (shrink)

Microphotography was one of the earliest applications of photography in science: The first monograph on tissue organization illustrated with microphotographs was published in 1845. In the 1860s, a large number of introductions to scientific microphotography were published by anatomists. They argued that microphotography was a means of documenting the results of microscopic analysis, uncontaminated by the subjectivity of the observer. In the early decades of the 19th century, before the general acceptance of cell theory, such a technique was of special (...) importance, as no criteria were available to distinguish between important and superficial characters in the description of tissue microstructures. Microphotography was praised as the method of choice for documenting the scientific observations of microscopic material. Some of the microphotographic practices described in these early manuals, however, did not conform with the idea of a purely mechanical process of documentation. The authors of these manuals saw photography not as a technique which produced artifacts, but as a complete and reliable substitute for the original preparations. Thus, according to these authors, the artificial world of photography was seen as the actual representation of the microworld. Consequently, they tried to understand the microcosm by analyzing photographs instead of the microscopic preparation themselves. Such attitudes discredited the use of microphotography in the sciences. Consequently, the definitive breakthrough of scientific microphotography was delayed until the 1880s and was largely due to the efforts of Robert Koch, who made microphotography a central tool of bacteriology. (shrink)

The employment of the cell-concept is examined in the context of some selected cell-theories ; for these cases it is argued that the logical structures of their respective cell-concepts are strongly interrelated, e. g., in some respect the theory of Schwann is an inversion of that of Meyen. Nevertheless, Meyen's theory is distinguished by operating with an idealized cell-structure that is considered to compromise the necessary constituents for maintaining the diverse cell-functions, whereas in Schwann's theory this clear >cell-structure-to-cell-function< relationship is (...) preserved only for the very beginning of cell-formation; the remaining segments of the cell's life-cycle are modelled according to both a natural-historical and a physicochemical atomistic research programme; thus, this hybrid conception cannot be classified to be a pure cell-physiological one. Other cell-theories from between 1840 and about 1900 – among which are the theories of the »Energide« or the »Mikromer« – do not add to the beforehand elucidated logical structure of those earlier concepts. As a complement to all these cell-theoretical conceptions a more precise understanding of protoplasmatic theories may be obtained. Since, basically, they assumed the possibility of a substance endowed with morphogenetic functions they got into the historically well documented conflict with cell-theories relating structure to function. Finally, the four-fold mode of meaning of the cell-concept is summarized and its relevance for fundamental problems in the biological debate or for questions concerning the reality of biological objects is discussed. (shrink)

In his study on 'schelling's and hegel's verhaltnis zur naturwissenschaft' of 1844 m j schleiden, one of the leading biologists of that time, opposed the speculative idealism. his work marks the change of the german biology to a science that is founded on materialistic assumptions. it gives the essence of a discussion that is not only interesting in a historical perspective but accentuated an ongoing controversy.