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for if animals can be protected by inoculation from fowl-cholera, 
anthrax, and rabies, it is quite possible that when the science of 
bacteriology is better understood, mankind may be exempted from 
all such diseases as phthisis, diphtheria, scarlet fever, cholera, and 
indeed all those caused by poisoning germs. 
accepted the truth of the great scientist’s assertion, that his treat- 
ment would cure consumption in its earliest stages. I have the 
greatest respect for Professor Koch as a scientific chemist and an 
earnest pioneer in the deeper mysteries of science, but I can but 
deplore that he was so unfortunately advised as to introduce his 
remedy in a manner go little in accordance with the traditions and 
practice of scientific men of this country. 
Koch’s fluid or tubercular as it is now called, was, until quite 
recently, to all intents and purposes, a secret remedy, and even 
now, he has only told us what it is, without giving such details as 
would enable English chemists to manufacture it for themselves. 
Tuberculin is an animal poison of the nature of a ptomaine, more 
followed by grave and violent symptoms, such ag fever 
and inflammation, sometimes delirium and other signs of profound 
disturbance of the system; it is undoubtedly a treatment which 
