1916] VETERINAEY MEDICINE. 73 



eyes was small, but in cheese with larger eyes the number was greater. Cheese 

 containing a large percentage of saltpeter developed no fermentation when 

 inoculated with lactic nutritive solutions. 



Several tables are given which show the number of glycerin bacteria and of 

 B. acidi ijropionici in the various kinds of Swedish cheese at various stages. 



VETERINARY MEDICINE. 



The principles of veterinary surgery, L. A. Mekillat {Chicago: Alexander 

 Eger, 1915, 2. ed., rev. and enL, pp. 352, figs. 114).— This volume is intended to 

 meet the requirements of the student of veterinary medicine and of the prac- 

 titioner. The second part (pp. 149-345) consists of a translation of Pathologie 

 Chirurgical Generale, by LeBlanc, Cadeac, and Carougeau. 



Biological therapeutics, A. Eichhokn {Cornell Vet., 6 {1916), No. 1, pp. 

 5-24). — A general review of the biological products in use as therapeutic and 

 diagnostic agents. 



Immunity: Methods of diagnosis and therapy and their practical applica- 

 tion, J. CiTKON, trans, by A. L. Gaebat {Philadelphia: P. Blakiston's Son d Co., 

 [1914'], 2. ed., rev. and enl., pp. xyiI-\-261, pis. 2, figs. 38).— This is the second 

 edition, revised and enlarged, of the work previously noted (E. S. R., 27, p. 76). 

 Chapters on tumor studies and anaphylaxis have been added to the new edition 

 and the subject matter of chemotherapy greatly elaborated. 

 ■ A laboratory course in serum study, H. Zinssee, J. G. Hopkins, and R. 

 Ottexbeeg {Neio York: The Maemillan Co., 1916, pp. XIII+184). — This volume 

 embraces a series of experiments and diagnostic tests in immunology carried 

 out in an optional course given to medical and graduate students by the authors 

 at Columbia University. Some of the subjects considered are immunization of 

 animals ; bactericidal and hemolytic power of normal serum ; hemolysis ; quan- 

 titative relations of amboceptor and complement ; agglutinins and agglutination ; 

 precipitins ; complement fixation ; preparation for and technique of the Wasser- 

 mann test ; titration of an unknown antitoxin ; animal toxins ; antitrypsin ; 

 opsonins and titration of immune opsonins ; and anaphylaxis. 



Fvu'ther researches on combined vaccines, A. Castellani {Centhl. Bokt. 

 [etc.'], 1. Aht., Orig., 77 {1915), No. 1, pp. ^5-73).— This material has been 

 previously noted from another source (E. S. R., 33, p. 477). 



The origin of the antibodies of the lymph, F. C. Becht and A. B. Lx'ck- 

 HAEDT {Atner. Jour. Physiol., 40 {1916), No. 2, pp. 366-371, figs. 3). — From the 

 Investigation it Is concluded that " the concentration of antibodies is greater in 

 the serum than in the thoracic lymph, and greater in the thoracic lymph than 

 in the neck lymph, not only in the actively immune animal but also in the 

 passively immune animal ; not only after equilibrium is established, but at the 

 time when active exchange is occurring. The source of the antibodies of the 

 lymph is the blood by direct exchange from that fluid. There is no evidence 

 that antibodies originate from the tissues and are emptied into the lymph stream 

 at the seat of formation." 



Studies on the Abderhalden reaction, E. AYeise {Arch. Hyg., So {1916), No. 

 2-3, pp. 61-116). — From the investigation it has been demonstrated that spe- 

 cific ferments which cleave placenta protein can not be detected in the blood 

 serum of pregnant swine, since such serum contains too many bodies which 

 react with ninhydrin. The serum also shows no regularity in its action, the 

 serum of nonpregnant animals very often cleaving placental substrate. The 

 dialysis procedure for the determination of pregnancy in swine is, therefore, 

 neither practicable nor reliable. In pregnant sheep and cattle placenta-protein- 

 splitting ferments are very easily detected and are never found in nonpregnant 



