31G Seventeenth Annual Report of the 



the infection, and the increase of those losses which the simpler 

 and more acceptable method aimed at diminishing. Abstractly 

 and applied instantly, I had no doubt at all that the latter method 

 would prove the best, but it conld not be applied at once, and, 

 in any case, its adoption would involve a break with the federal 

 authorities, the refusal of the pecuniar} 7 and professional lid]) 

 which the federal government so generously offered, a most rep- 

 rehensible delay in an efficient restriction of the plague, and no 

 one can tell how large an extension of its area of prevalence. 



It may make the subject clearer to place in parallel columns 

 the more prominent duties imposed on the sanitarian under the 



two systems : 



Required under prohibition of 

 Required under slaughter system movement system 



1. Tracing line of infection. 1. Tracing line of infection. 



2. Inspections of animal or herd. 2. Inspections of animal or herd. 



3. Quarantine. 3. Quarantine. 



-1. Destruction or sterilization of 4. Destruction or sterilization of 



products. products. 



."). Appraisement. 5. No appraisement. 



(5. Slaughter. (i. No slaughter. 



7. Indemnity. 7. No indemnity. 



s. Burial, renderings or other dis- 8. No burial. 



posal. 

 !). Disinfection. 9. Disinfection. 



10. Destruction or disinfection of 10. Fodder fed to herd. 



fodder. 



11. Purchase of new herd. 11. No new purchase. 



12. Risks: tuberculosis, contagious 12. No risk of other imported disease. 



abortion, scouring, parasitisms, 

 etc. etc.. with new cattle. 



This shows an imposing array of credits on the non-slaughter 

 side: we save cost of appraisement, of slaughter, of indemnity, ol 

 burial, of fodder, of new stock, or disease in animals purchased, 

 and in the others that would later come in contact with them. 



The claim made by Hess thai recovered animals in Switzerland 

 conveyed the disease for nearly 5 months, is a reckless guess in 

 a country where the plague is never absent and where un fenced 

 ranges are used in common, ami the same remark applies to the 

 statement of Bolz that the infection survived for <i months in a 

 dung heap and infected cows at the end of this time. Frozen 

 hard without intermission the latter claim might be justified, but 

 even in Germany frost is not so continuous, and on British farms 

 the infection introduced in early winter never survived to infect 

 the new susceptible spring calves; nor in Xew Y"ork and .New 



