PROCEEDINGS OF SECTION I. 691 



FAT NECROSIS IN BOVINES. 



Animals are frequently slaughtered in which the omental, perirenal, 

 and other abdominal fat is extensively converted into a whitish, more 

 friable, and firmer substance, which, microscopically, is found to consist 

 of needle-shaped crystals in rosettes in the fat cells. This is evidently 

 of the nature of fat necrosis. Is its origin possibly microbic, due to 

 the fat-splitting power of some bacterium ? Inspector Buckley informs 

 me that it is found almost invariably in cows. If so, has it any relation 

 to pregnancy ? 



Occasionally in the brisket of bullocks a putty-like deposit is 

 found, but this has no relation to the above. 



CATTLE SLAUGHTERED AT FREMANTLE ABATTOIRS. 



[For three months, from part of August to part of November, 1906.) 



Number slaughtered 4,067, and calves 37 



" " with pathological lesions . . 665 = 16-4°o 



Tubercular cattle : 360 = 8-8% 



Of tubercular cattle, 275 lesions in lungs = 76-4% 



" " 200 " retropharyngeal glands, &c., 6o-b% 



Antinomycosis 26 = 6% 



Hydatids 84 = 2% 



Fluke 26 = 6% 



SHEEP AND LAMBS SLAUGHTERED AT FREMANTLE ABATTOIRS. 



[For three months, from part of August to part of November, 1906.) 



Number slaughtered 20,634 



Number with pathological lesions 1,497 



Tuberculosis — Liver 3 



Lung 1 



— 4 



Pseudo- tuberculosis 4 



Hydatid cysts 254 



Strangylus filaria 24 



Fluke 6 



PIGS SLAUGHTERED AT FREMANTLE ABATTOIRS. 



(For three weeks, from part of August to part of November, 1906.) 



Number slaughtered 1,801 



Number with pathological lesions 149 



" tuberculosis 61 



" Hydatids 12 



" Swine fever 13 



(Owing to the scattered nature of the abattoirs where these animals 

 were killed, complete supervision by the inspectors could not be 

 maintained. Hence these figures must be considered as much lower 

 than the actual ones.) 



