A Contribution to the Early History of India-Rubber. François Fresneau (1703–1770)

1938 ◽  
Vol 11 (1) ◽  
pp. 1-4 ◽  
Author(s):  
E. A. Hauser

Abstract In the fall of 1936 the Revue Générale du Caoutchouc published a special issue dedicated to the memory of the French scientist La Condamine on the occasion of the bicentenary of the discovery of rubber. Quite recently the same periodical issued another special number on the occasion of the International Exposition in Paris, 1937. The title page reproduces Cochin's well-known portrait of Charles Marie de la Condamine. The first paper by Ch. Jung, entitled “History and Development of the Rubber Industry,” gives all the credit of the discovery of rubber to Condamine, and for the details refers to the publication mentioned above. In the bicentennial number, Henri de la Condamine gives a detailed biography of his ancestor, wherein the name of Fresneau as a correspondent of Condamine is mentioned in a few places. A second paper, by Auguste Chevalier, deals chronologically with the various publications presented by Condamine, and here Fresneau receives as much credit as can be justified from the contents of these papers. Finally, we owe a revival of the correspondence between Fresneau-Condamine and the French Minister of Colonies Bertin to J. Ch. Bongrand. However, when one considers the exceedingly courteous phrases and carefully couched terms characteristic of letters of that period, and bears in mind that this correspondence only refers to the last years of Fresneau's life, such documents alone cannot be taken by the historian at their full value.

1936 ◽  
Vol 9 (4) ◽  
pp. 621-625 ◽  
Author(s):  
E. H. Hurlston

Abstract The two main classes of vulcanized oil substitute or factice are heat-cured brown factice and cold-cured white factice. They were both introduced into the rubber industry at about the same time (1846–1847), the former variety by Anderson and the latter by Parkes. It has been stated (Twiss, Trans. Inst. Rubber Ind., 7, 234 (1931)) that Parkes first opened a proofing factory at Birmingham but that the business was shortly afterwards absorbed by Chas. Macintosh & Co. and transferred to Manchester. This probably dates the commencement of the use of white factice in proofings. The early history of the development of the use of brown factice on a works scale is more obscure. As the name implies, these vulcanized oils were used in the first place as ingredients which could economically substitute part of the crude rubber content of mixings, but as time went on it became apparent to compounders that these materials possessed intrinsic properties which made them almost indispensable in certain mixings, both for ease of manufacture and for high quality of the resultant article. The utility of factices in the general rubber trade is therefore in many respects analogous to that of reclaimed rubbers.


Quaerendo ◽  
1993 ◽  
Vol 23 (3) ◽  
pp. 184-207 ◽  
Author(s):  
B.J. McMullin

AbstractThere is circumstantial and documentary evidence that printing from stereotype plates was being undertaken by Joseph Athias in Amsterdam no later than September 1673. The terms of an agreement of that date between Athias and the Widow Schippers and Anna Maria Stam imply that he had two English bibles in plates, one a twelvemo, the other an eighteenmo. The eighteenmo can be equated with an edition with engraved title-page with the imprint 'Cambridge, Roger Daniel, 1648', the last in a sequence of four with the same imprint, each of which carries over from its predecessor a certain amount of setting. The earliest in the sequence appears to have been printed by Joachim Nosche in Amsterdam. That the fourth was impressed at least six times is suggested by the fact that it was printed on six or more discrete papers, thus implying that it was either kept standing or plated. That it was indeed plated at some stage of its life, and that the plates consisted of columns (not pages), is confirmed by the observable differences in alignment of the columns from exemplar to exemplar, particular alignments agreeing with particular papers. Athias's primacy in the history of stereotyping is thus established. From among the many librarians who have assisted me during this investigation I should like to thank in particular Dr Lotte Hellinga, whose advice in the early stages proved especially helpful. Earlier versions of the text were presented to: The Bibliographical Society of Australia and New Zealand, Adelaide, August 1985; The Centre for Bibliographical and Textual Studies, Monash University, September 1985; The Bibliographical Society, London, April 1992.


Author(s):  
Robert M. Fisher

By 1940, a half dozen or so commercial or home-built transmission electron microscopes were in use for studies of the ultrastructure of matter. These operated at 30-60 kV and most pioneering microscopists were preoccupied with their search for electron transparent substrates to support dispersions of particulates or bacteria for TEM examination and did not contemplate studies of bulk materials. Metallurgist H. Mahl and other physical scientists, accustomed to examining etched, deformed or machined specimens by reflected light in the optical microscope, were also highly motivated to capitalize on the superior resolution of the electron microscope. Mahl originated several methods of preparing thin oxide or lacquer impressions of surfaces that were transparent in his 50 kV TEM. The utility of replication was recognized immediately and many variations on the theme, including two-step negative-positive replicas, soon appeared. Intense development of replica techniques slowed after 1955 but important advances still occur. The availability of 100 kV instruments, advent of thin film methods for metals and ceramics and microtoming of thin sections for biological specimens largely eliminated any need to resort to replicas.


1979 ◽  
Vol 115 (11) ◽  
pp. 1317-1319 ◽  
Author(s):  
J. E. Morgan

2015 ◽  
Author(s):  
Alexander Henry ◽  
David Thompson
Keyword(s):  

Author(s):  
C. Claire Thomson

This chapter traces the early history of state-sponsored informational filmmaking in Denmark, emphasising its organisation as a ‘cooperative’ of organisations and government agencies. After an account of the establishment and early development of the agency Dansk Kulturfilm in the 1930s, the chapter considers two of its earliest productions, both process films documenting the manufacture of bricks and meat products. The broader context of documentary in Denmark is fleshed out with an account of the production and reception of Poul Henningsen’s seminal film Danmark (1935), and the international context is accounted for with an overview of the development of state-supported filmmaking in the UK, Italy and Germany. Developments in the funding and output of Dansk Kulturfilm up to World War II are outlined, followed by an account of the impact of the German Occupation of Denmark on domestic informational film. The establishment of the Danish Government Film Committee or Ministeriernes Filmudvalg kick-started aprofessionalisation of state-sponsored filmmaking, and two wartime public information films are briefly analysed as examples of its early output. The chapter concludes with an account of the relations between the Danish Resistance and an emerging generation of documentarists.


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