282 STATE BOARD OF AGRICULTURE. 



CONCLUSIONS. 



1. The intradermal abortion test is a reliable and specific test for 

 Bad. abortus infection in guinea pigs. 



2. Guinea pigs injected with dead cultures of Bad. abortus do not 

 react to the intradermal abortin test. 



3. The physiological salt suspension of Bad. abortus is the best type 

 of abortin so far employed. 



4. Treatment with dead cultures before or after infection does not 

 afifect the intradermal reaction. 



5. Treatment with dead cultures does not protect guinea pigs against 

 infection with Bad. abortus. 



6. Detection of infectious abortion in cattle may be possible by means 

 of the intradermal abortin test. 



REFERENCES. 



1. Giltner, Ward. 



1919. How Shall We Name Bovine Abortion Disease? 



23rd Am. Report, U. S. Live Stock San. Ass'n, Chicago; 



2. Fleischner, E. C, and Meyer, K. F. 



1918. The Bearing of Cutaneous Hypersensitiveness on the Patho- 

 genicity of the Bacillus abortus bovimus. 

 Am. Jour. Dis. of Children, Vol. IG, No. 4, pp. 2G8, 273. 



3. Reichel, J., and Harkins, M. 



1917. The Diagnosis of Infectious Abortion of Cattle (Bang's dis- 

 ease) With Specific Reference to the Intradermal Abor- 

 tin test. 

 Jour. Amer. Vet. Med. Asso., Vol. 50, pp. 847-862. 



4. Giltner, Ward. 



1916. Laboratory Manual in General Microbiology. John Wiley 

 and Sons. 



