Abstract
THE bi-annual meeting of the International Society of Leather Trades Chemists was held at the Colonial Institute, Amsterdam, on September 18-21 in conjunction with the I.V.L.I.C., the president, Mr. F. C. Thompson, being in the chair. The president elect for 1934-35 is M. C. R. Loos (France), and the 1935 Conference is to be held at Brussels at the invitation of the Belgian Section. During the proceedings, Prof. E. Stiasny (Darmstadt) was unanimously elected an honorary member of the Society, in recognition of his international scientific services. In his presidential address, Mr. F. C. Thompson dealt with the subject of p 7. determination, at the conclusion of which the Society nominated a special commission to consider this subject, particularly from the point of view of the leather and allied industries. The technical and scientific agenda comprised some thirty-eight contributions, the opening paper being by Prof. H. R. Kruyt (University of Utrecht) on ‘The Colloid Chemistry of Collagen and Gelatin’. In the light of de Jong's theory of complex coacervations, collagen was regarded as a complex coacervate, this theory being discussed also from the points of view of the histologist and embryo-logist. At a special session with the International Tanners' Council, a film was shown on the Warble fly, followed by a lecture by Prof. M. Bergmann (Dresden) on ‘Hide and Skin Preservation’. Among other papers presented were ‘The Structure of Collagen Fibres’ by Dr. A. Kuntzel, ‘Characteristics of Vegetable Tanning’, Dr. F. Stather, ‘Some Problems of Two Bath Chrome Tanning’, Prof. E. Stiasny, C. Riess and A. Papayannis, ‘Estimation of Acid in Chrome Leather’, C. Riess and A. Papayannis, ‘X-ray Spectrograph of Albumin with Relation to Collagen and Gelatin—’ and —‘Studies on Mutarotation of Gelatin’ by Prof. J. R. Katz. ‘Histology of the Corium and Grain of Hide’, by Dr. G. C. Heringa, ‘On the Theory of Leather Dyeing’ by Prof. E. Elod. A number of other papers related to leather technology.
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International Society of Leather Trades Chemists. Nature 132, 509 (1933). https://doi.org/10.1038/132509b0
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DOI: https://doi.org/10.1038/132509b0