10 HENRY C. LEA'S Sox & Co.'s PUBLICATIONS Chemistry. 



HOFFMANN, F., A.M., Ph.D., & POWER, F.B., Ph.D., 



Public Analyst to the State of New York. Prof, of Anal. Chem. in Phil. Coll. of Pharmacy. 



A Manual of Chemical Analysis, as applied to the Examination of Medicinal 

 Chemicals and their Preparations. Being a Guide for the Determination of their Identity 

 and Quality, and for the Detection of Impurities and Adulterations. For the use of 

 Pharmacists, Physicians, Druggists and Manufacturing Chemists, and Pharmaceutical and 

 Medical Students. Third edition, entirely rewritten and much enlarged. In one very 

 handsome octavo volume of 621 pages, with 179 illustrations. Cloth, $4.25. Just ready. 



The first portion of this work, treating of operations and reagents, and giving a general 

 account of the methods of chemical analysis, has been considerably enlarged and completed, 

 so that now it affords an efficient and explicit guide in the practical execution of chemical 

 analysis. That on volumetric analysis has been correspondingly extended, and a new 

 chapter on the separation and estimation of the alkaloids has been added. The second 

 and main part of the work, containing the physical and chemical characteristics of medi- 

 cinal chemicals and of the methods of establishing their identity, quality and purity, has 

 been much enlarged and improved, new chemicals of recognized therapeutical value have 

 been added, and new tables and many additional illustrations, introduced. The methods 

 for the quantitative estimation of many chemicals have also received an increased share of 

 attention. Especially is this true in regard to the identification and separation of those of 



Sisonous properties. The labors and results of pharmacopceial revisions both here and in 

 irope, as well as the kindred literature, have not been neglected ; so that the work will 

 be found to correspond with the most recent advances in chemical knowledge. 



This excellent work will be at once recognized i to the manner in which they have been carried 

 as a valuable addition to our medical literature, out, the work will be found as complete as can well 

 It is important that our druggists and pharmaceu- ! be desired. The descriptions of operations are 

 tists should have facilities at hand to insure them- ! full without being redundant, so that the tyro can 

 selyesof the reliability of the agents they dispense, i easily understand them and practise the processes 

 This work aims to be such a guide, and "its publica- ; successfully; at the same time the details are not 

 tion will be hailed with pleasure by every druggist given with such minuteness and prolixity as to 

 and practitioner who may desire purity in drugs, i become wearisome alike to the adept and the stu- 

 We commend a work which affords our pharma- dent. A work is thus presented well adapted as a 

 ceutists and druggists a guide for the analysis of ' book of reference for practical use, and calculated 



the agents they daily dispense. The Buffalo Medi- \ to impart such information as in each particular 



cat and Surgical Journal, April, 1883. j case may be useful or required witnin the limit of 



Viewed in regard to its general aims as well as ' its objects. American Journal of Phar., May, 1883. 



CLOWES, FRANK, D. Sc., London, 



Senior Science-Master at the High School, Newcastle-under-Lyme, etc. 



An Elementary Treatise on Practical Chemistry and Qualitative 

 Inorganic Analysis. Specially adapted for use in the Laboratories of Schools and 

 Colleges and by Beginners. Second American from the third and revised English edition. 

 In one very handsome royal 12mo. volume of 372 pages, with 47 illustrations. Cloth, $2.50. 

 The chief object of the author of the present work [ renders it unintelligible to the primary student 

 was to furnish one which was sufficiently elemen- [ unless supplemented by copious verbal explana- 

 tary in the description of apparatuses, chemicals, ' tions from the teacher. The Elementary Treatise 

 modes of experimentation, etc., so as to "reduce of Dr. Clowes, examined with reference to the 



to a minimum the amount of assistance required 

 from a teacher." It is a generally recognized fact 

 that one of the most serious hindrances to the 

 utility of many of the smaller text-books is the too 

 great conciseness of the language employed, which 



above claims, is found to be a great improvement 

 on other elementary works. A student who care- 

 fully reads this text will scarcely need the assist- 

 ance of a tutor in following out any of the ex- 

 periments described. Va. Med. Monthly, Ap., 1881. 



GALLOWAY, ROBERT, F. C. 8., 



Professor of Applied Chemistry in the Royal College of Science, Ireland, etc. 

 A Manual of Qualitative Analysis. From the sixth London edition. In one 

 handsome royal 12mo. volume, with illustrations. Preparing. 



CLASSEN, ALEXANDER, 



Professor in the Royal Polytechnic School, Aix-la-Chapelle. 



Elementary Quantitative Analysis. Translated, with notes and additions, by 

 EDGAR F. SMITH, Ph. D., Assistant Professor of Chemistry in the Towne Scientific School, 

 University of Pennsylvania. In one handsome royal 12mo. volume of 324 pages, with 36 

 illustrations. Cloth, $2.00. 



It is probably the best manual of an elementary and then advancing to the analysis of minerals and 

 nature extant, insomuch as its methods are the such products as are met with in applied chemis- 

 best. It teaches by examples, commencing with try. It is an indispensable book for students in 

 single determinations, followed by separations, | chemistry. Boston Journal of Chemistry, Oct. 1878. 



GREENE, WILLIAM H., M. D., 



Demonstrator of Chemistry in the Medical Department of the University of Pennsylvania. 



A Manual of Medical Chemistry. For the use of Students. Based upon Bow- 

 man's Medical Chemistry. In one royal 12mo. volume of 310 pages, with 74 illustrations. 

 Cloth, $1.75. 



It is a concise manual of three hundred pages, the recognition of compounds due to pathological 

 giving an excellent summary of the best methods conditions. The detection of poisons is treated 

 of analyzing the liquids and solids of the body, both : with sufficient fulness for the purpose of thestu- 

 forthe estimation of their normal constituents and | dent or practitioner. Boston Jt. of Chem., June, '80. 



