This paper is concerned with the application of science to a practical activity. The story begins in the late eighteenth century, a period of agricultural innovation, with various authors urging that definite chemical knowledge should replace rule of thumb in the application of fertilisers. In the work of Archibald Cochrane, ninth Earl of Dundonald, we find this exhortation beginning to give way to descriptions of actual chemical experiments, and interpretations of equilibria in the soil. But it is only with Davy's (...) Agricultural chemistry of 1813 that we get clear descriptions of soil analyses that could be undertaken by a farmer, accompanied with a certain amount of biochemical information on the growth of plants. Davy's recommendations were essentially conservative; he provided support for the best practices already being recommended by innovators. His book is interesting too, for the light it casts upon his more theoretical writings. (shrink)

SummaryIn the history of chemistry, the Danish chemist Julius Thomsen (1826–1909) is best known for his contributions to thermochemistry. Throughout his life, he was a pronounced atomist and a tireless advocate of neo-Proutian views as to the constitution of matter. On many occasions, especially in his later years, he engaged in speculations concerning the unity of matter and the complexity of atoms. In this engagement, Thomsen was alone in Danish chemistry, but his works were representative of a large number of (...) 19th-century chemists, particularly in England and Germany. Thomsen's ideas as to the constitution of matter, the periodic system and the noble gases, may be seen as typical of this vigorous trend in fin de siècle chemistry. (shrink)

The term philosophy of chemistry is here construed broadly to include some publications from the history of chemistry and chemical education. Of course this initial selection of material has inevitably been biased by the interests of the author. This bibliography supersedes that of van Brakel and Vermeeren (1981), although no attempt has been made to include every single one of their entries, especially in languages other than English. Also, readers interested particularly in articles in German may wish to consult the (...) bibliography by Dittus and Mayer which also contains some material not included here (Dittus and Mayer, 1992). The aim is to maintain an up-to-date version of this bibliography and to publish a revised version in due course. Suggestions for further inclusions should be sent to the author. (shrink)

Two imposing related problems confronted the chemical spectroscopist of the late nineteenth century. First, he lacked a criterion for judging the validity of claims for elemental discoveries; indeed, he possessed no satisfactory operational definition of the chemical element. Secondly, he felt the need for correlating the spectra of the elements to a conception of their ultimate constitution.

Between 1869 and 1871, D. I. Mendeleev, a teacher at the University at St Petersburg published a textbook of general chemistry intended for his students. The title, Principles of Chemistry was typical for the time: it meant that chemistry was no longer an inquiry on the ultimate principles of matter but had become a science firmly established on a few principles derived from experiment.

One of the consequences of the renewed interest in philosophical aspects of chemistry has been the corresponding renewed interest in the periodic system of the elements which embodies so much chemical knowledge in an implicit form.We have therefore decided to further promote scholarship on the periodic system by compiling a bibliography of previously published material. As the title of this article implies, we restrict ourselves to secondary sources. Readers interested in primary material can consult a number of useful references for (...) this purpose. These include the classical treatment on the History of the periodic system by van Spronsen as well as Mazurs’s compilation of over 700 forms of the periodic system. Mazurs also includes a detailed bibliography of articles and books in several different languages. Additional sources of primary articles which come to mind include David Knight’s Classics in the History of Chemistry, Carmen Giunta’s web pages for the history of chemistry and entries under individual scientists in the Dictionary of Scientific Biography. Turning to the present compilation we do not claim this to be a comprehensive list, since it partly reflects the interests of the senior author (E.R.S.), namely the relationship between the periodic system and quantum mechanics. For example, in addition to articles specifically on the periodic system we include a number of articles which deal with the related themes of electronic configurations of the elements. This bias also explains the disproportionate number of references to the work of the senior author.We have tried to include as many as possible of the articles on the periodic system which have appeared in the philosophy of science literature. These include Bensaude, Christie, Hettema and Kuipers, Kultgen, Lipton, Maher, Scerri, Shapere and Sundaram, among others. (shrink)

Around fifteen years before the chemical substance alumina could be decomposed in the laboratory, it was identified as a compound and predicted to contain a new element called ‘aluminium’. Using this episode from early nineteenth-century chemistry as a case study for the use of analogical reasoning in science, this paper examines how chemists relied on chemical classifications for the prediction of aluminium. I argue that chemists supplemented direct evidence of chemical decomposition with analogical inferences in order to evaluate the composition (...) of substances. Since they were established on the basis of relevant similarities in chemical properties, classifications were taken to reflect so-called ‘chemical analogies’ between substances. In combination with the knowledge that analogous properties indicated similarities in composition, this enabled chemists to infer the composition of experimentally indecomposable substances by analogy. The trust in such analogical inferences, even if they could not be confirmed through experiment, was justified by pragmatic considerations. Whereas the possibility of decomposing a substance depended on the available laboratory techniques, chemical analogies were thought to last independently of internal composition. It was therefore more practical to keep well-established classes of substances together rather than separate them on the basis of experimental results that might evolve as new techniques were developed. Besides highlighting the links between analogical reasoning and classification, this paper also illustrates the importance of analogy in the evaluation of elementary nature in the early nineteenth century. (shrink)

In the course of his chemical investigation of crude platina ore, William Hyde Wollaston in 1802 isolated and characterized the metal palladium. In early 1803, he chose to make known his discovery by offering small samples of the metal for sale through a small shop in London. In the notice advertising the properties of the new metal, no information was given as to its source nor to its discoverer. The unique properties of the metal, and the secrecy surrounding its discovery, (...) led the Irish chemist Richard Chenevix to question the elemental nature of the new metal. His hasty but extensive investigation of the chemical properties of palladium convinced him that it was no more than an alloy of platinum and mercury, and he denounced the discovery as fraudulent. The president of the Royal Society, Joseph Banks, was drawn into the resulting furore, and correspondence between him and Chenevix reveals involved plans to obtain the identity of the palladium discoverer. The controversy is viewed as a significant episode in the continuing debate in the chemical community over the operational definition of a chemical element, and although Chenevix's concern over the growth in the number of new elements was justified, his choice of palladium as a test case was an unfortunate one, for his claim that the metal was an alloy was found to be erroneous. Motives for the actions of both Chenevix and Wollaston are sought, and the judgement that their careers were damaged by the incident is questioned. (shrink)

Thomas Thomson (177–1852) is primarily remembered as the author of the textbookA System of Chemistrywhich dominated the British field for about 30 years. In his chosen subject of chemistry his enthusiastic support of Daltonian chemical atomism and his zealous support of Prout's hypothesis have been recently recognized. Yet his activities were not as restricted as received opinion suggests. When Thomson assumed in 1818 the newly created Regius Chair of Chemistry at the University of Glasgow, the prospects for him as teacher (...) and researcher were apparently encouraging. But he met difficulties in his attempts to elevate the status of the Regius Professors at Glasgow and in his concurrent endeavours to develop chemistry as an autonomous science. The ensuing controversy, first private and then public, spanned more than 20 rancorous years. Only one of Thomson's obituarists, however, even briefly mentions this debate; and recent writers on Thomson either ignore it completely or skim over it lightly. The main purpose of this paper is therefore to redress the balance of previous work on Thomson by outlining the chief features of his professorial period, paying particular attention to his style of teaching and attitude to his subject. For Thomson the development of his discipline was inseparable from the question of his status as a Regius Professor. Accordingly I also try to show that he played an important role in the movement for reform of the Scottish Universities and I discuss the structure of power at the University of Glasgow. Such analysis is necessary for understanding Thomson's appraisal of his situation as Regius Professor of Chemistry. In order to put his professorial period into the context of his earlier work I introduce the main body of the article with a short reconsideration of the form and significance of his career before 1817, when he moved to Glasgow. (shrink)

In his celebrated historic-epistemological work Identité et réalité, Émile Meyerson claimed that the scientific conservation principles were first suggested and accepted for philosophical reasons, and only afterwards were submitted to experimental tests. One of the instances he discussed in his book is the principle of mass conservation in chemical reactions. Meyerson pointed out that several authors, from Antiquity to Kant, accepted the idea of quantitative conservation of matter; and Lavoisier himself was strongly influenced by a priori ideas, using this principle (...) instead of attempting to test it. This paper will review Meyerson’s claim and historic evidence, focusing especially the late nineteenth and early twentieth century, when the principle of mass conservation was tested in highly accurate experiments. Instead of confirming the principle, some of those experiments led to the detection of anomalies. Hans Landolt, for instance, noticed that there were some small violations of the principle. He observed mass variations of about 10−6 in chemical reactions produced in hermetically sealed glass tubes. Since Landolt was a famous chemist, his results produced a strong response. Several researchers repeated his experiments, with different results. Landolt himself improved his experiments, with a balance that could detect mass changes of 10−7. After changes of the experimental procedure, the chemical reactions did not show significant mass changes. There was not, however, any “crucial experiment” “proving” that mass was conserved. The observed anomalies were set aside mainly by theoretical reasons, after the discovery of radioactivity and the development of the theory of relativity. (shrink)

During the second half of the twentieth century, the domain of geochemistry has greatly expanded and the field is today often seen as a branch of an extended chemistry of the Earth, called cosmochemistry. This paper is a historical introduction to cosmochemistry in which the wider cosmic aspects are surveyed up to about 1915, when nuclear physics changed the scene. These wider aspects or themes include, firstly, the attempts to determine the relative abundances of the elements, secondly, the extension of (...) geochemistry to include physical geochemistry, thirdly, the study of meteorites and, fourthly, the spectroscopic study of the stars within the astrochemical tradition. Because of the lack of reliable data, a great deal of the protocosmochemistry described in the present paper was speculative. Nonetheless, by 1915 the contours of the cosmochemistry of the future were just visible and the developments here singled out can thus be seen as belonging to the prehistory of modern cosmochemistry. (shrink)