04 The Farmer's YeUrinary Admiser. 



of protection against anthrax has undoubtedly been the 

 means of planting that deadly disease on many soils hitheiio 

 wholesome and safe, and this evil cannot fail to be extended 

 wider and wider, so long as the method is pursued in the 

 present indiscriminate manner. 



For animals pastni-ed on fields that are already infected, 

 Pasteur's protective inoculation against that infection may 

 be safely allowed, but for those on fields as yet uninfected, 

 but of a nature favorable to the preservation of tliat poison 

 when planted, such inoculation must be unequivocally con- 

 demned. In such a case the animals should be housed for 

 inoculation, or confined on a porous soil which will not pre- 

 serve the germs, and should only be set free when all dan- 

 ger, from living germs within their bodies, has passed, and 

 after a pei'fect disinfection. 



XV. — IMMUNITY BY INOCULATION WITH STERILIZED PB0DU0T8 

 OF A CONTAGIOUS DISEASE. 



As we have already seen, in the development of bacte- 

 ridia, whether in or out of the animal body, there are two 

 distinct bodies, living and dead, the multiplication of tJie 

 living germ and the increase of its chemical j>roducts. Thus 

 the beer-yeast (saccharomyces cerevisise), growing in a sweet 

 organic fiuid, like malt, multiplies its own numbers enor- 

 mously, but it also produces an amount of carbon dioxide 

 and alcohol proportionate to the amount of sugar origi- 

 nally present in the liquid. So the disease-germ, operating 

 in the animal body, not only increases its numbers but 

 elaborates a variety of chemical products of which a solu- 

 ble digestive ferment and a poisonous organic alkaloid 

 (ptomaine) are especially important as attacking the integ- 

 rity and life of the tissues. Apart from these chemical poi- 

 sons the living germ probably could not destroy the vital- 

 ity of the blood-globules and tissue-cells (nuclei). It is their 

 place to rob the living tissues of their vital power of resist- 



