780 EXPERIMENT STATION RECORD. I Vol. 37 



year. In hog-cholera work the serum treatment was resorted to from June 25. 

 after which date slaughter in suspected outbreaks was limited to animals needed 

 for diagnostic purposes. 



Report on operations of the veterinary sanitary service of Paris and the 

 Department of the Seine during the year 1915, H. Mabtel (Rap. Op&r. Serv. 

 V^t. Sanit. Paris et D6pt. Seine, 1915, pp. 161, figs. 17). — This is the usual re- 

 port (E. S. R., S5, p. 279) giving a detailed account of the work of the year. 



Annual report of the Bengal Veterinary College and of the Civil Vet- 

 erinary Department, Bengal, for the year 1915-16, A. Smith (Ann. Upt. 

 Bengal Vet. Col. and Civ. Vet. Dept., 1915-16. pp. i+I I +S+r 1 1 1 +5) .—This is 

 the usual annual report (E. S. R., 35, p. 483). 



Animal diseases regulations with notes on diagnoses, F. E. Lionnet (Dept. 

 Agr. Mauritius. Gen. Ser., Bui. 7 (1916), pp. 26). — The regulations in force in 

 Mauritius against animal diseases, which were completely remodeled in 1915, 

 have been brought together In this report. Short notes on the diagnoses of the 

 variou.s infectious diseases specified in the regulations are included. 



Manure disposal as a factor in the control of parasitic diseases of live 

 stock, M. C. Haul (Jour. Amer. Vet. Med. Assoc, 51 (1911), No. 5, pp. 675- 

 678). — The author calls attention to the fact that the proper disposal of manure 

 is the first step to be taken in the control of parasitic infestation of live stock. 



The poisonous properties of the two-grooved milk vetch (Astragalus bi- 

 BiUcatus) (Wyoming Sta. Bui. 112 (1917), pp. 59-S7, fig. i).— This brief pre- 

 liminary report upon the two-grooved milk vetch, presented at this time in order 

 to warn stockmen of the poisonous nature of the plant, consists of two parts, 

 the first (pp. 59-65), by O. A. Reath. dealing with the chemical properties of the 

 plant; and the second (pp. GO. 67), by E. H. Lehnert, with its physiological 

 effect, etc. 



Milk vetch, which grows on the plains and in the valleys throughout the 

 Rocky Mountain region, appears during the month of May and goes to seed the 

 latter part of July. A description and an analysis of the plant by Knight. 

 Hepner. and Nel.son have been previously noted (E. S. R., 20, p. 135). The 

 plant has provetl to be poisonous to cattle, from 80 to 90 per cent of the affected 

 animals dying, and suspicion Is held regarding Its effect upon sheep. It was 

 found that water easily removes the active poison from green or air-drle«l 

 material, and that all parts of the plant contain ppison with a slight excess In 

 the leaves. The poison is neither predpitated by basic acetate of lead nor de- 

 composed at the boiling point of water. It is nonalkaloidal, and the fact that it 

 can be deprived of its toxicity by boiling with dilute acids indicates its prob- 

 able glucosldlc character. A definite crystallins substance has l)een Isolateil, 

 giving chemical reactions common to glucosids. Thus far no chemical antidt)te 

 has been obtained, but, as Indicated by the physiological action of the poison, 

 drugs that stimulate the heart and nervous system should prove beneficial In 

 the case of vetch poisoning. 



Active immunization with sensitized and nonsensitized bacteria, H. F. 

 SwiJT and R. A. Kinski>t.a (Proc. Soc. Expt. Biol, and Med., H (1917), Ko. 6, 

 pp. 120-122). — In the experiment noted four types of vaccine were studied, plain 

 stock vaccine killed at 5G° C, sensitized stock vaccine kllle«l at 56*, freshly 

 prepared sensitized vaccine killed at 56*, and an alcohol precipitate of sensi- 

 tized vaccine. Type I pneumococcus was u.sed In all the vaccines. Mice. 

 g\ilnea pigs, and rats were used as experimental animals, the rats being found 

 the most satisfactory for comparative studies. 



The results showed that in from 6 to 10 days after the last immunizing dose 

 the/e was a higher degree of immunity in the plain vaccine series, but this fell 

 off rapidly. In the series immunized with freshly sensitized vaccine the liu- 



