December 13, 1907] 



SCIENCE 



829 



■ Various errors in construction seem also to 

 have escaped the author's notice and deserve 

 mention for correction in a second edition: 



The order is so different from that given by 

 Yung that, although done on different animals, 

 the interpretation of the real influence of light is 

 probably open to question (p. 264). 



He found that when the tadpoles of Rana tent- 

 poraria . . . were fed on a mixed vegetable and 

 meat diet that 95 per cent, of them were females 

 and 5 per cent, were males (p. 381). 



The potentialities of producing both sexes is 

 present in all eggs and in all sperm (p. 422). 



The development of Cowper's gland seems to be 

 correlated with the development of the prostate 

 and after castration remains undeveloped (p. 

 436). 



With pimprennelle, which also gives an abun- 

 dant nourishment, but not so well as the pre- 

 ceding, the caterpillars that showed the female 

 type of marking were in excess {p. 437). 



Typographical errors are most frequent in 

 scientific names. We find, for example, the 

 following : " pollychloros " for polychloros (p. 

 16), "fasceata" for fasciata (p. 24), " mac- 

 chaon" for machaon (p. 29), " ingra " for 

 nigra (p. 34), " rectvoetris " for rectirostris 

 (p. 40), " hortenses " for hortensis (in the 

 explanation of Fig. 15), " Lymncea" for Lim- 

 nma (p. 263), " nemorales " for nemoralis 

 (p. 273), " Eormaphs hamamelistes " for Hor- 

 maphis hamamelidis (p. 328), " Hydraiina" 

 for Hydatina (p. 348), " Bhoditis" for Rhah- 

 ditis, throughout the table on p. 371, and 

 Bosii for Rossi (p. 374). 



Some other typographical errors are : " sub- 

 jects of 'Formative Eeiz'" (p. vi, preface), 

 " 25,000 grams " for 2,500 grams as the weight 

 of the adult rabbit, " birth-rate " for birth- 

 weight (pp. 255, 256), "extensive" for ex- 

 tensively (p. 317), "temperate" for tempera- 

 ture (p. 338), "dandylion" for dandelion (p. 

 380), "capulatory" for copulatory (p. 408), 

 "primoidia" for primordia (p. 421). On p. 

 374 the specific name " Rossi " (spelled Bosii) 

 is capitalized, while on p. 438 we find " fra- 

 issei." 



The book will undoubtedly prove of value 

 especially to the younger students of experi- 

 mental zoology and to the more general reader 



who desires to know something of the work 

 that has been done along these lines. 



C. M. Child 



Chemical Pathology. By H. Gideon Wells. 



Philadelphia, W. B. Saunders Co. 



While only a comparatively short time has 

 elapsed since the appearance of Virchow's 

 " Cellular Pathology," yet it is significant of 

 the steady progress of pathology that mean- 

 while new and infinitely finer means for its 

 advancement have been developed and many 

 new fields within its territory have been 

 opened to investigation. 



The cell is essentially chemical in its func- 

 tions. Normal and pathological processes as 

 well as bacterial influences in their relation 

 to higher forms present so many problems 

 that can be solved only by chemical agencies 

 and explained only in chemical terms, that 

 any book dealing adequately with chemical 

 phases of pathology offers an important addi- 

 tion to the means at hand for acquiring a 

 mastery of the subject. 



In his " Chemical Pathology," Professor 

 Wells addresses himself to three classes of 

 readers : the student of medicine, the physician 

 and the investigator, but it seems evident, as 

 one reads his book, that it is the medical stu- 

 dent whose interest he has sought chiefly to 

 attract. For reference reading on the chem- 

 ical side of pathology in the same way that 

 the student would use his Orth for morphol- 

 ogy, the book is well designed. The exposi- 

 tion of fundamental chemico-pathological 

 changes, such as inflammation, cell necrosis, 

 etc., is clear and concise, and is well designed 

 to enable the student to grasp a larger concept 

 of pathology than he could well obtain without 

 such an aid. Of the chapters dealing with 

 the problem of immunity one may not speak 

 so unreservedly. The elucidation of the the- 

 ories and the experimental evidences pertain- 

 ing to that extensive subject are not so well 

 put as in some other works of this kind. It 

 is also to be regretted that in dealing with the' 

 problems of bacteriology the author did not 

 go into the physical chemistry of the subject 

 in more detail — a field that has become par- 

 ticularly fruitful, in recent years, in its yield 



