UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 340 ¢ Contribution from the Bureau of Animal Industry ‘ A. D. MELVIN, Chief Washington, D. C. PROFESSIONAL PAPER December 27, 1915 EXPERIMENTS IN VACCINATION AGAINST ANTHRAX.’ By ApotpH E1cHHorRN, Chief of the Pathological Division. *@ CONTENTS. Page. Page. Prevalence of anthrax and methods of con- Preparation of spore vaccine..........------- 10 SURO) tere mrepera oeta a istace ce siete © clei icin (aia eialacie sis.35 Ie Technic ofadministration.. 5... ...------ 2. 11 Protectivervaccination. 2222 2222 2232.2: 2) Test of the simultaneous method on cattle Production OFSenume-2sscee22 2. coke tLe 4 And SHEGpee ees keen 2 see ae eam amas 13 Standardization of the serum.............--- Tale IOldktOStSe- sey eee ia cece et eween esas 13 Mxpenimoentalidatacs: \2c82