. L'analyse des aliments et des médicaments . TOWNSON ET MERCER. SERVICE DE DÉTAIL : 89, Bishopsgate Street, London, E.O. SERVICE DE VENTE EN GROS ET D'EXPORTATION : ./(5X 34, RUE CAMOMILLE, E.C. Téléphone national : 1663 Avenue. Adresse télégraphique:TOWNSON, LONDRES. FABRICANTS D'APPAREILS CHIMIQUES et SCIENTIFIQUES, ET DE ■^ Pure Chemicals for Analysis, f^ COMPLÉTER LES OUTFITTERS DE LABORATOIRE POUR LES MÉTALLURGISTES 6t ASSAYERS. FABRICANTS SUR RENDEZ-VOUS AU THEDJrector-QEgénéral des magasins pour l'Inde, agents de la Couronne pour les colonies, Royal Arsenal, Royal Military Academy, Science and Art départ^ment, Oxford et Cambridge Universiti

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. The analysis of food and drugs . TOWNSON & MERCER. RETAIL DEPARTMENT: 89, Bishopsgate Street Within, London, E.O. WHOLESALE & EXPORT DEPARTMENT: ./(5X 34, CAMOMILE STREET, E.C. National Telephone:1663 Avenue. Telegraphic Address:TOWNSON, LONDON. MANUFACTURERS OF CHEMICAL & SCIENTIFIC APPARATUS, AND OF ■^ Pure Chemicals for Analysis, f^ COMPLETE LABORATORY OUTFITTERS FOR METALLURGISTS 6t ASSAYERS. MANUFACTURERS BY APPOINTMENT TO THEDJrector-Qeneral of Stores for India, Crown Agents for Colonies, Royal Arsenal, Royal Military Academy, Science and Art Depart^ment, Oxford and Cambridge Universities, London School Board, and most of the County Councils and Technical Institutions. THE AlfALYSIS OF FOODAND DRUGS. iart 11. CHEMICAL AND BIOLOGICAL ANALYSISOF WATER. T. H. PEARMAIN and C. G. MOOE, M. A. (cantab.). — Members of the Society of Public Analysts, authors op* a mantjal of applied bacteriology, * aids to the analysis of food and drugs, ETC.. LONDON:BAILLIEEE, TINDALL AND COX, 20 & 21, King William Street, Strand. [PAEIS AND MADRID.] 1899. All rigJiis reserved. T i Sv ^^/%. ■Q-rpai ]P /^^^ P35 I PEEFACE. Water is not technically included among foods or drugs, but it enters so constantly into the ordinary practice of ananalyst whose work lies in their examination that itappears to us desirable to include it in the present manual. It has been impossible in the space at our disposal evento refer to many of the enormous number of processeswhich have been proposed for the estimation of the varioussubstances contained in waters. In making a selection, we have chosen those which by actual prolonged use wehave found to be convenient, and, within practicable limits, accurate. The information in regard to the suspended matter inwater is illustrated by original drawings, as the recognitionof the larger organisms is easier than that of the bacteria, and might be practised with advantage more often thanis usual. The majority of the d

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• bookcentury1800
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• bookidcu3192400093
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