TRACHEOTOMY AND LARYNGEAL INJECTIONS. 
91 
the growth of the microbes in suitable culture fluids in the 
laboratory as well as in the liquids and tissues of the body. 
“ 3d, Immunity may be produced by introducing into the 
animal body such chemical products that have been produced 
in the laboratory.” 
(To be continued .) 
TRACHEOTOMY AND LARYNGEAL INJECTIONS IN AFFECTIONS 
OF THE THROAT. 
By J. C. Meyer, Sr., V.S., Cincinnati, Ohio. 
(A Paper read before the Ohio State Veterinary’Medical Association). 
Diseases of the throat described in every text-book, and 
their frequent appearance in veterinary medicine, must nec¬ 
essarily make the practitioner more or less familiar with 
their characteristics and gradations, therefore it would be 
not only superfluous, but also improper to consume the time 
by recapitulating the symptoms, causes, etc., particularly as 
in many of the ordinary cases, therapeutic interference is 
not wanted. 
Last fall we had many opportunities to observe the last 
named form, as at one time the disease threatened to become 
enzootic. The milder sore throat cases, which were in the 
majority, suffered mostly from catarrhal pharyngitis, “ An¬ 
gina Pharyngitis.” 
Among those affected with laryngo-pharyngitis were sev¬ 
eral which either took sick suddenly, or for which medical 
assistance was postponed, until suffocation threatened to cut 
short their existence, thus necessitating the operation of 
tracheotomy- For this purpose I prefer the trocer invented 
by Prof. Hayne, of Vienna, especially when the acuteness of 
the case indicates a probability that the tube will not be 
wanted any longer than a week or ten days, as in croup, 
purpura hemorrhagica, (Blutflecken krankheit), cramp of the 
larynx, etc. The technical procedure with this trocar re¬ 
quires the least time, there is no loss of substance, and the 
canulas is not difficult to clean. The caliber, however, is too 
