koch’s method with tuberculosis. 
187 
ORIGINAL ARTICLES. 
KOCH'S METHOD WITH TUBERCULOSIS 
AND THE EARLIER USE OP CORRESPONDING PRODUCTS IN 
OTHER CONTAGIOUS DISEASES. 
By James Law, F.R.C.Y.S., Cornell University, Ithaca, N. Y. 
(A Paper read before the New York State Veterinary Medical Society.) 
(Continued from page 126.) 
April 2ist I inoculated a yearling heifer, No. 7, in the tail 
and left flank with sterilized lymph from the flank of No. 4, 
killed the same day. The lymph had been kept for hours at 
140° to 150° F.; there was no local nor general reaction. 
April 27th I inoculated No. 7 and another yearling, No. 8, 
with sterilized lymph that had been heated to 140° for several 
hours. There was no reaction. 
Agril 22d I inoculated a yearling in the left lung and in 
the trachea, with fresh lymph from No. 4, just killed. In all, 
one and one-half ounce of the liquid was employed. From 
April 24th to 30th the temperature ranged in the main, 104° 
and 105°, and thereafter to May 20th, oscillated between 104° 
and the normal. Swellings appeared in the neck and in the 
left side in the seats of inoculation, pulse and breathing ranged 
high, but no distinct lung symptoms were observed. The 
local swellings subsided to two hard masses, like hickory-nuts, 
and the general disorder disappeared. Later, at the post¬ 
mortem examination, this animal showed a small sequestrum 
in the left lung, and old false membranes on the pleura. 
EXPOSURE OF THE ABOVE TO INFECTION. 
On July 15th I sent three of the survivors to Christopher 
Slade, Whitehall, Baltimore Co., Md., to be kept in his in¬ 
fected stables, and three to Mr. W. W. Hubbs, Newtown, 
Queens Co., L. I., to be placed with his infected herd in the 
close buildings of a town dairy. 
Three months later I heard from both gentleman that not 
one of these cattle had shown a sign of lung plague. 
