490 SCIENCE PROGRESS 



various metals ; whilst the last part deals with certain special analyses which 

 arise in actual practice. The book should be as welcome to electrochemists 

 and analysts as its predecessor, and should, in addition, gain many fresh 

 readers. F. A. M. 



A Foundation Course in Chemistry, for Students of Agriculture and Tech- 

 nology. By J. W. DoDGSON, B.Sc, A.I.C., Lecturer in Chemistry 

 at University College, Reading, and J. A. Murray, B.Sc, Lecturer 

 in Agricultural Chemistry at University College, Reading. Second 

 Edition, thoroughly revised, with new chapters. [Pp. xii + 241, with 

 illustrations.] (London : Hodder & Stoughton, 1920. Price, 6s. bd. 

 net.) 



As indicated by the title, the purpose of this book is to give the student 

 such assistance as can be obtained from books in acquiring a knowledge 

 of those fundamental facts and general principles of Chemistry upon which 

 the superstructure of agricultural chemistry or other technical application 

 must necessarily rest. The attempt has been made to emphasise those 

 aspects of the subject which are of special importance to such students, 

 while others have been treated in sufficient detail to enable the general 

 principle to be securely grasped. 



In the present (second) edition several sections, notably those on the 

 Fixation of Nitrogen and the Chemistry of Organic Matter, have been re- 

 written, and a new chapter on Physical Chemistry has been added. 



The treatment is simple and straightforward, so that the volume should 

 be useful to students attending short courses in Agriculture, Horticulture, 

 and Dairying, and to those attending courses in Hygiene, Domestic Economy, 

 and the like. F. A. M. 



A Class-book of Organic Chemistry. By O. B. Cohen, Ph.D., B.Sc, F.R.S., 

 Professor of Organic Chemistry, Leeds University. Vol. II, for Second- 

 year Medical Students and others. [Pp. 156 -f- viii.] (London : 

 Macmillan & Co., 1919. Price 4s. 6d. net.) 



One feels almost sorry for the average medical student when one realises the 

 number of subjects with which he Is expected to have at all events a nodding 

 acquaintance, so that any endeavour to lighten his labours by presenting one 

 of the subjects in a concentrated and readable form is to be welcomed even 

 if the attempt tends to savour of "cramming." 



Certainly there is no subject upon which the average G.P. should know 

 more than organic chemistry, which — as indeed its very name shows — is so 

 intimately bound up with ail vital processes, but unfortunately there are few 

 subjects in which he is usually less interested 



Prof. Cohen's book should therefore be of considerable value to second- 

 year medical students ; and in addition it should be useful to those students 

 of chemistry who are specially interested in the therapeutical application of 

 their science. 



The book follows more or less the usual arrangement and has the advantage 

 that the descriptive text is interspersed with illustrative experiments all 

 " guaranteed to work," so that the little volume will be a useful laboratory 

 companion as well as a condensed textbook. F. A. M. 



Organic Chemistry for Medical, Intermediate Science, and Pharmaceutical 

 Students. By A. Killen Macbeth, M.A., D.Sc, F.I.C. [Pp. xii + 

 235, with diagrams.] (London : Longmans, Green & Co., 1920. Price 

 6s, 6d. net.) 



As stated in the preface, this book is written from the point of view of the 

 teacher who has in mind the difficulties encountered by the average student, 



