274 EXPERIMENT STATION RECORD. [Vol. 37 



stitutes in cheese making. Results of cheese making experiments at the Finch 

 dairy station in Ontario, Canada, in which several commercial brands of pepsin 

 and rennet were tested, and notes on the use of pepsin in cheese making are 

 summarized by J. A. Ruddick and G. H. Barr. In these experiments the pepsin 

 cheese was found to be as good in texture and slightly better in flavor after 

 nine months' storage than that made from rennet. The relative value and 

 milk-coagulating power of the various brands tested are tabulated. 



VETERINARY MEDICINE. 



American Veterinary Medical Association. — Report of committee on dis- 

 eases, J. R. MoHLER {Jour. Amer. Yet. Med. Assoc, 50 (1917)} No. 7, pp. 895- 

 904). — This report consists of a brief statement regarding the status of the 

 more important diseases which threaten the live-stock industry of the Uniteil 

 States, including hemorrhagic septicemia, hog cholera, foot-and-mouth disease, 

 dourine, tuberculosis, swamp fever, contagious abortion, and influenza. 



Sixteenth biennial report of the State Live Stock Sanitary Commission of 

 Michigan for the years 1915 and 1916, G. W. Dunphy and E. T. IIai.lman 

 {Bien. Rpt. State Live Slock Sanit. Com. Mich., 16 (1915-lG), pp. SI, pis. 4).— 

 This report deals with the work of the years 1915 and 1916 including the oc- 

 currence of and control measures against tuberculosis, hog cholera, contagious 

 abortion, hemorrhagic septicemia, rabies, and anthrax. 



Annual administration report of the civil veterinary department in 

 Baluchistan for the official year 1915-16, J. G. Cattfxl (.inn. A'iinin. Rpt. 

 Civ. Vet. Dept. Baluchistan, 1915-16, pp. 16). — This report deals with veteri- 

 i<ary instruction, treatment of disease, including the occurrence of and work 

 with the contagious diseases of animals during the year, breeding operations, etc. 



Annual administration report of the civil veterinary department. Madras 

 Presidency, for 1914-15 (Ann. Admin. Rpt. Civ. Vet. Dcpt. J/nd/o.s, 1914-15. 

 pp. 26, pi. 1). — This report includes a<rounts of the ocurrence and treatment 

 of diseases of live stock in the Madras Presidency during 1914-1.5. 



Studies in pneumonia. — II, Various methods of determining the bac- 

 tericidal action of substances in vitro and their relation to the chemo- 

 therapy of bacterial infections. .1. A. Kolmeb, S. Soi.is-Cohen, and G. D. 

 Heist (Jour. Infect. Diseases, 20 (1917), No. 3, pp. 293-312).— The authors 

 have carefully studied, and modified in some instances, the Rideal-Walker and 

 Hygienic Laboratory methods, the centrifuge method, pipette method, combined 

 in-vitro-vivo method, antiseptic method, and plating method. 



It is concluded in general that in-vitro bactericidal tests are probably of 

 value in chemotherapeutic studies, this being based on the general observation 

 that substances most parasiticidal in vitro also show this quality in marked 

 degree in vivo. " In-vitro tests should be conducted when possible with the 

 microparasite causing the malady under study, as the object of chemo- 

 therapy should be the production nor only of polybacteriotropic and polyproto- 

 zootropic chemicals but also of monotropic substances for a definite micro- 

 parasite. In the absence of a pure culture of the particular microparasite 

 under study, a closely allied species may be used. ... It is highly Important 

 to adopt a definite technique and adhere to it in every detail in conducting these 

 tests, because different methods yield varying results, depending mainly on 

 whether the substance excels as a bactericide (killing quickly in high concen- 

 tration, but losing rapidly in bactericidal power in low concentration) or as 

 an antiseptic (retaining bactericidal power to a better extent in low concen 

 tratlon)." 



