ETIOLOGY 25 
personally when I had the pleasure of meeting him in 
London in 1914—yet the organism he described was not 
identical with B. bronchisepticus. According to his pub- 
lished description, his organism liquefied gelatin (see 
p. 32), which puts it entirely out of the class with B. 
bronchisepticus, as B. pertussis, B. abortis, B. melitensis, and 
B. alkaligenes are as close to B. bronchisepticus as that.” 
Fic. 2.—Dr. CopEMaNn’s BACILLUS, SHOWING CHAIN FORMATION. 
From a pure old culture in beef-peptone broth. x 1,500. Proceed- 
ings of National Veterinary Medical Association, 1go2. 
Copeman obtained a few isolated colonies of his 
organism from the base of the brain in the case of a dog 
which had died of distemper. The fact of his finding 
these discrete colonies, few in number, at the base of the 
brain, along with the fact of the other situations in the 
bodies of distempered dogs where he found his organism— 
the fact that he never obtained it from the‘blood, and the 
cultural appearances on potato—disposed Dr. M‘Gowan, 
in later years, to consider Copeman’s organism was 
identical to his own.* _ 
% Journ. Path, and Bact., 1911. 
