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SCIENCE 



[N. S. Vol. XXVI. No. 670 



only be necessary to briefly refer to a very few 

 points not specially noted in tbe former. 



As the title suggests, tbe book comprises the 

 elements of physiology, and this it really is. 

 Few text-books now available for use in the 

 schools under the title of physiology are such 

 in fact. Most are more or less cumbered with 

 anatomy, hygiene, etc., and the physiology is 

 thus confused with other matter. Without 

 here considering the relative merits or demerits 

 of these points, it is worth while emphasizing 

 the fact that in this we have a book of essen- 

 tially pure physiology, based on adequate and 

 well-established facts. In its size and the 

 scope of its matter it comes well within the 

 time usually given to the subject in the aver- 

 age school. In its mechanical features the 

 book is worthy of all praise. C. W. H. 



Practical Physiological Chemistry. By Philip 

 B. Hawk, M.S., Ph.D. 416 pages, illus- 

 trated. Philadelphia, P. Blakiston's Son & 

 Co. 1907. Price, $4.00. 

 The appearance of another work on physio- 

 logical chemistry is a further evidence of the 

 rapid growth of this department of science in 

 our American universities, and a proof, also, 

 that something more than the old, so-called 

 " medical chemistry " is beginning to find 

 favor in our schools of medicine. This book 

 by Dr. Hawk is written for students of medi- 

 cine and general science, who have already 

 secured a good groundwork in the more funda- 

 mental branches of chemistry, and presents a 

 very good outline of those facts of physi- 

 ological chemistry which may be clearly 

 demonstrated in a laboratory course. While 

 the title might be taken to indicate that the 

 work is a laboratory manual only this is by no 

 means the case, as many of the discussions are 

 full enough to constitute a general treatise on 

 the subject. 



In an experimental way the book presents 

 not only the usual general tests and qualita- 

 tive reactions, but also a very considerable 

 number of quantitative methods applicable in 

 physiological-chemical investigations. Most 

 of these are clearly described, and are full 

 enough for working conditions, but in a few 



cases the value to the student would be greatly 

 increased by the addition of fuller explana- 

 tions. For example, in describing the deter- 

 mination of total and inorganic sulphates in 

 the urine practically nothing is said concern- 

 ing the reasons for the several steps, and at 

 first sight the student is very likely to fail to 

 recognize the real distinction between the two 

 processes. A number of similar cases have 

 been noticed. 



The mechanical work on the book is most 

 excellent. It is printed from clear type on 

 good paper, and is bound in such a manner 

 that it remains flat when opened on a table, 

 a good quality not very often found in books 

 intended for the laboratory. J. H. Long 



Elements of Physical Chemistry. By Harry 



C. Jones. Third Edition. 8vo. Pp. 650. 



New York, The Macmillan Company. 1907. 



This text-book is so well known that the 

 appearance of a new edition calls for only 

 a brief statement in regard to the changes that 

 have been made in it. 



The revised edition follows very closely the 

 plan of the first, but it has been somewhat 

 enlarged by the addition of matter pertaining 

 to recent advances in the science. The chief 

 additions deal with Thomson's work on elec- 

 trons, Morse's work on osmotic pressure, recent 

 work on radioactivity, and there are about 

 twenty pages devoted to the author's hydrate 

 theory and his work on conductivity in mixed 

 solutions. There are many minor changes, 

 and some of the rather complicated cases of 

 equilibrium discussed in the first edition have 

 been wisely omitted. Many references to the 

 original literature have been added, which 

 make the book a valuable one for reference. 



H. W. Foote 



Outlines of Psychology. By Wilhelm Wundt. 

 Translated by C. H. Judd, Ph.D. Third 

 English from the seventh revised Gei-man 

 edition. Leipzig, Wm. Englemann. Pp. 

 xxiii + 392. 



The third edition of the English translation 

 of Wundt's " Outlines " brings the work to 

 the English-speaking student as it appears in 



