SYNTHETIC TANNINS AUTHORS PREFACE WHILST the synthesis of the natural tannins has been suc cessfully outlined by Emil Fischer, it has been left to the Chemical Industry, notably the Badische Anilin und Soda fabrik in Ludwigshafen-on-the-Rhine, to discover the means of making possible the production of the synthetic tannins. The scientific results of Fischers researches are to-day common knowledge, and these, together with questions arising therefrom, will only be lightly touched upon in the book herewith presented. Even an attempt at enumerating the present synthetic tannins has so far not been published, and I have therefore availed myself of the opportunity of making a brief summary of them. My work at the B. A. S. F. deepened my insight in this new field ample opportunity of applying these synthetic products in practice was given me wfyen, as a result of the war, I was appointed technical consultant to the Austrian Hide and Leather Commission, and in this capacity was called upon...

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