A compendium of food-microscopy with sections on drugs, water, and tobacco / compiled, with additions and revision, from the late Dr. A.H. Hassall's works on food by Edwy Godwin Clayton.

  • Clayton, Edwy Godwin.
Date:
1909
Catalogue details

Licence: In copyright

Credit: A compendium of food-microscopy with sections on drugs, water, and tobacco / compiled, with additions and revision, from the late Dr. A.H. Hassall's works on food by Edwy Godwin Clayton. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    Lastly, it is largely a consequence of Dr. Hassall's re- searches that students of pharmacy now receive systematic training m the use of the microscope for the determination of the quality and nature of powdered drugs. In this work he was a pioneer, more than fifty years ago. In fact, he was in advance of his time in pointing out the advantage of microscopically testing drugs, as to their identity and purity a method of investigation which only latterly has begun to be recognized, by the General Medical Council and the Pharmaceutical Society, as in many cases of greater use than chemical operations, such as ascertaining the amount of mineral matter, and the like. For permission to include a reproduction of the fine picture of the late Dr. Hassall, now in the Board Room of the Royal National Hospital for Consumption and Diseases of the Chest, the Author expresses his grateful acknow- ledgments to the Chairman and Board of Management of that Institution. He is much indebted also to Colonel Sir E. W. D. Ward, K.C.B., K.C.V.O., Secretary of the War Office, and Permanent Under-Secretary of State for War, for interesting particulars relating to the statistics of recruiting: to Mr. Ernest Morgan, Secretary of the Ventnor Hospital, and to Mr. Cuthbert E. A. Clayton, Librarian to the Manchester Medical Society and the Medical Faculty of the University of Manchester, for information on a number of points; to Madame J. Nicolas Philipp, for many valuable and helpful suggestions; and to Mrs. E. G. Clayton, for assistance kindly rendered at several stages of the work. It is hoped that this book may be of use to medical men, analysts, and others interested in that important branch of Public Health work which is concerned with the purity of food, drink, and medicines. E. G. CLAYTON. Laboratories, 23, Holborn Viaduct, London, E.C., December, 1908.