602 PROCEEDINGS OF SECTION G2. 



12. The group of diseases is allied to malignant oedema and to 

 blackleg, but there are certain definite phenomena which clinically 

 ■serve to distinguish them, while the results of immunity experi- 

 ments negative a very close relationship. 



13. Feeding with virulent cultures of ttie bacilli results in the 

 rapid and definite production of immunity, the season of the year 

 being immaterial. 



14. Certain circumstances predispose to the infection, notably 

 condition and age, but probably the seasonal influence which appears 

 to be a predisposing factor is due chiefly to the opportunity under 

 natural conditions for skin punctures by contaminated prickles, 

 ■etc. occurring at definite periods of the year. The direct introduc- 

 tion of the bacilli by means of internal metazoan parasites is very 

 improbable, if not impossible, in view of the results of feeding 

 experiments. 



15. For the group of diseases dealt with the established British 

 name " braxy " is recommended in preference to any other. 



BIBLIOGRAPHY. 



Jensen, C. O.—Vetennarian, Vol. LXIX., No. 825, p. 621 (Sept.. 



1896). 

 "Neilsen, Ivar. — Tidsskrift for VeterincBrer, 1888. 

 Departmental Committee Report, Part II. (Board of Agriculture 



and Fisheries), 1896. 

 GiLRUTH, J. A. — Annual Report, Chief Veterinarian, Department 



of Agriculture, New Zealand, 1902, p. 270. 

 Jhid. — Veterinary Journal, Vol. 66, pp. 254 and 355 (May and June. 



1910). 

 "WiLLMOT, R. — A Minute on Sheep Diseases, 1910, Agric. and Stock 



Dept., Tasmania, Bulletin No. 16. 



APPENDIX A. 



TASMANIAN DISEASE. 



Details of Experiments. — The results of the tirst series of experiments 

 in which the pathogenic bacillus was secured in a state of purity by passage 

 through guineapigs have already been published. [\'eteyinary Journal, Vol., 

 66, pp. 254 and 355 (May and June, 1910). 



The following are the details of the further experiments referred to in 

 text. 



1. — Further Experiments on Guineapigs and Rabbits with Subcultures 

 IN Serum Broth under Oil. 



Guineapig 18. — Inoculated with 0'U5 cc. tirst serum broth subculture 

 from blood of pigeon. Death occurred in 48 hours. Post-mortem: much 

 -subcutaneous oedema, extending along floor of abdomen ; internal organs 

 normal, but for patches of necrosis in liver. 



