Januaky 29, 1904.] 



SCIENCE. 



189 



in his views as to tlie position which, should 

 be held in relation to each other of a number 

 of genera, but as Dyar's list is certain for 

 many years to come to be used largely by 

 American students in arranging their collec- 

 tions, he has thought best to follow it. As in 

 the 'Butterfly Book,' the 'Moth Book' con- 

 tains a number of digressions and quotations. 

 The quotations are extremely apt, and the 

 digressions are extremely readable. 



Dr. Holland's literary style is charming, and 

 his cosmopolitan training and wide range of 

 information lend interest and value to every 

 line of the digressions. The one entitled 

 ' Walking as a Fine Art ' deserves a place in 

 literature as well as in a treatise on hygiene. 

 The book is by no means confined to descrip- 

 tive matter of the species treated. State- 

 ments concerning the habits and the life his- 

 tories are scattered through the pages, and 

 much sound information of a practical eco- 

 nomic character accompanies the accounts of 

 many of the injurious species. The general 

 chapters on the life history and anatomy of 

 moths, and on the capture, preparation and 

 preservation of specimens, contain all the in- 

 formation that is necessary, and in the chapter 

 entitled ' Books about the Moths of North 

 America ' the author has given a competent 

 bibliography for the use of students who wish 

 to go further into the subject. The index is 

 very full. 



As a bit of book-making, the volume is a 

 handsome one. Some of the text figures suf- 

 fer in the printing on account of the character 

 of the paper used, but this is by no means a 

 serious blemish. 



Dr. Holland is to be congratulated on the 

 completion of this very attractive and useful 

 work, and the number of collectors and stu- 

 dents is sure to be increased rapidly as the 

 result of its publication. L. O. Howard. 



Allgemeine Physiologie. Ein Grundriss der 



Lehre vom Leben. By Max Verworn. 



Fourth Edition, revised. Jena, G. Fischer. 



1903. Pp. 652; illustrations 300. 



The favor with which this work is still re- 

 garded is evinced by the fact that the fourth 

 edition is now called for within nine years of 



the book's first appearance. The author has 

 made in it less radical changes than in pre- 

 vious editions. Those portions which have 

 received the most considerable alterations are 

 the section on 'Physical World and Mind,' 

 which has been rewritten and enlarged, and' 

 endeavors to present more clearly than before 

 the author's psychomonistic conception; the 

 section on ' Enzymes and Their Mode of Ac- 

 tion,' which has again been rewritten, largely 

 for the purpose of showing the analogy be- 

 tween ferment actions and the catalytic ac- 

 tions of inorganic chemistry; and the section 

 on ' Growth as the Fundamental Phenomenon 

 of Change of Form,' which has been revised 

 and extended by Professor Rhumbler, and 

 contains the latest conclusions of that well- 

 known investigator, with figures and discus- 

 sions of Rhumbler's and Heidenhain's models 

 of the dividing cell. In the revision of the 

 chemical portions of the book the author has 

 had the counsel of Professor von Baeyer, of 

 Munich, and Dr. Coehn, of Gottingen, and the 

 alterations, though not gTeat, represent im- 

 provements. 



Engelmann's law of complementary chro- 

 matic adaptation . is cited, according to 

 which the color of an organism becomes 

 more and more complementary to that of 

 colored light to which the organism is sub- 

 jected. Macfadyen's observations are sum- 

 marized on the resistance of bacteria to ex- 

 treme cold, and Regnard's observations of the 

 temporary cessation of vital activity in a large 

 variety of organisms subjected for not too 

 long a time to great pressure. Wallengren's 

 demonstrations are quoted of anodic, kathodic 

 and transverse galvanotaxis in the same or- 

 ganism by the application, to the same spot, 

 of polar stimuli of different intensities. Many 

 other recent discoveries are cited; but with the 

 multiplicity of present investigations in gen- 

 eral physiology one naturally finds many im- 

 portant omissions. By judicious excisions and 

 condensations of the previous text the en- 

 largement of the book, caused by the addi- 

 tions and a much-needed revision of the index, 

 is limited to twenty-one pages. 



Frederic S. Lee. 



Columbia University. 



