VETERINARY MEDICINE. 379 



magnesium. Recently it has been obtained by a process of electrolysis, which 

 has the advantage of cheapness of production, increased yield, and greater 

 purity. 



The most important use of casein is in the manufacture of galalith (milk 

 stone), which is used in imitation of ivory, tortoise shell, and celluloid. This 

 product is prepared by molding and compressing the casein in the presence of 

 formaldehyde. Numerous factories are found throughout France and Austria. 

 In 1910 about 440,000 lbs. of casein were transformed into galatin at Surgi^re, 

 Charente-Iuferieure, where 35 dairies bring their milk to the casein factory. 

 The residue, containing a large proportion of lactose, is returned to the dairies 

 where it is used as a feed for pigs. 



Casein is also put out in the form of vulcanized products, and is used in the 

 clarification of wines. 



VETERINARY MEBICINE. 



Veterinary materia medica and therapeutics, K. Winslow (New York, 1913, 

 7. ed., pp. 77P).— In this edition (E. S. R., 20, p. 1183), which has been revised 

 and enlarged, the chapters on the physiological actions of ergot and digitalis 

 have been entirely rewritten, and those on adrenalin and quinin have been 

 changed in order to bring them up to date. Large additions have been made to 

 the sections on the therapeutic actions of iodin, bismuth, magnesium sulphate, 

 lysol, phenol, cocaine, sodium chlorid, arsenic, camphor, antiseptics, vaccines, 

 and practical disinfection. Among the medicinal agents Included for the first 

 time in this book are glycerophosphates, picric acid, sodium, cacodylate, chlore- 

 tone, cresol, aspirin, novocain, thiosinamin, fibrolysin, yohimbin, and phenol- 

 phthalein. A complete section on poisons and antidotes has been added. 



Handbook of pathogenic micro-organisms, edited by W. Kolle and A. von 

 Wasseemann {Handhuch der pathogenen Mikroorganismen. Jena, 1912, vol. 1, 

 2. enl. ed., pp. X+1051, pis. 3, figs. 154). — The contents of this volume are as fol- 

 lows : Review of the Historical Evolution of the Study of Infection, Immunity, 

 and Prophylaxis, by R. Abel (pp. 1-29) ; General Morphology and Biology of 

 Pathogenic Micro-organisms, by E. Gotschlich (pp. 30-292) ; General Methods 

 of Bacteriology, by E. Friedberger and H. Reiter (pp. 293-554) ; Nature of 

 Infection, Mixed and Secondary Infection and Transference of Infectious 

 Diseases by Inheritance, by A. von Wassermann and F. Keysser (pp. 555-631, 

 632-658, 659-684) ; Biochemistry of Antigens with Particular Reference to the 

 Chemical Principles of the Specificity of Antigens, by E. P. Pick (pp. 685-868) ; 

 Specificity of the Organisms causing Infection, and The Principles of Acquired 

 Immunity (Active, General, Local, and Passive), by W. Kolle (pp. 869-904, 905- 

 942) ; and Natural Immunity, by M. Hahn (pp. 943-1020). The first edition of 

 this volume has been previously noted (E. S. R., 16, p. 601). 



Protein split products in relation to immunity and disease, V. C, V. C, Jr., 

 and J. W. Vaughan (PhiladelpJiia and New York, 1913, pp. XII +17-476, figs. 

 34). — This represents a detailed account of the investigations of the authors 

 and their coworkers which began nearly 15 years ago. 



In the introduction the theories relating to the physiological and pathological 

 action of the protein split products are discussed under the following head- 

 ings: (1) Bacteria are essentially particulate, specific proteins; (2) all true 

 proteins contain a poisonous group; (3) the chemical nucleus does not become 

 a poison until stripped in part at least of its secondary groups, and the intensity 

 of its poisonous action is determined by the thoroughness with which the 

 secondary groups have been removed; (4) whea proteins are submitted to the 

 action of disrupting agents there is the possibility of the chemical nucleus being 



