450 ANNUAL REPORT OF THE Off. Doc. 



Prof. Hutvra, of nnn<;arj, liad fouod in his experience that the 

 tubereolin test gave only two per cent, of error, while Prof. McFad- 

 yean of Canada, phiced it sliglitly lower than this. As the result of 

 numerous investigarions Prof. ^IcFadyean concludes: "(1) Tuberculo- 

 sis is essenially a conJagious disease, and ought to be so classified 

 and acknowledged by every country and State in the world. (2) It 

 is insidious m character, and only in a few cases comparatively can 

 it be diagnosed by physical examination; but in tuberculin we have 

 a safe and reliable test by which even latent cases can be diagnosed. 

 (3) That tuberculin is harmless. It does not produce abortion in 

 pregnant cows, impotency in bulls, or in any wny producing any in- 

 jniidus (Miccis on ajn"mals tested by it." 



I*rof. ^Nocard, of France, read an important paper on 



I. TUBEKCULOSLS IN POVINE ANIMALS: ITS DANGERS, ITS 



PROGRESS, ITS PROPHYLAXIS. 



Conclusions: 



^'A. — Tuberculosis is one of the diseases of cattle which causes 

 most loss to agriculture in all countries. 



B. — Everywhere the disease is on the increase; everywhere it forms 

 a menacing danger to public health as well as to public wealth. 



C. — Infection being the only formidable cause of the increase of 

 tuberculosis, there is need for the adoption of legal measures pre- 

 scribing: 



1. The complete sepai'ation of unhealthy from healthy ani- 



mals; 



2. The slaughtering, without delay, of those sick animals 



which show clinical signs of the disease, and especially 

 of cows attacked with tuberculous mastitis; 



3. The interdiction from selling other tuberculous animals for 



a destiiiation other than the slaughter-house; 



4. The pasteurization of all the sub-products of butter and 



cheese manufactories." 



II. ON THE RISKS INVOLVED TO MAN FROM TUBERCULOUS 



ANIMALS (CO-OCCUPATION, MEAT, MILK). 



Mkans of Guarding Against Them. 



Co<nclusions: 



"A.— The resemblance of tuberculosis in nuin and in mammals is 

 no longer denied. Healthy cattle-sheds have been infected bv 

 lengthened occui)ation by consumptive cattle-men. 



