570 
C. H. SWEETAPPLE. 
Pneumonia,” which I now have before me, says: (< An inoculated 
animal, healthy at the time of inoculation, cannot possibly com¬ 
municate pleuro-pneumonia to another one. I have frequently 
been asked the question, ( Will an inoculated animal contract 
pleuro-pneumonia ? To such a question, as the result of my 
experience, I can with confidence reply, JJoJ But he says 
further, if the operation has been improperly performed , and the 
animal not truly inoculated, it may be ineffectual; but that no 
animal will contract the disease that, after having been operated 
upon, has exhibited the characteristic features of inoculation. 
Mr. Rutherford quotes from a letter he has received from Natal: 
4 It may be interesting for you to know that our colony of Natal 
has suffered severely from pleuro-pneumonia, or lung sickness, 
and that the only means of prevention found to be of any use is 
inoculation.” In Australia the operation has been long and suc¬ 
cessfully practiced, and in a report by Mr. Bruce, chief inspector 
of stock, New South Wales, he says, “Inoculation is now gener- 
ally practiced throughout Australia;” and where it has failed, 
he defines the causes of the failure: First, the cattle being dis¬ 
eased when operated upon; second, the use of improper virus; 
third, to a wrong mode of operating; fourth, to unfavorable 
weather. In a later report he impresses on his government the 
desirability of making inoculation a compulsory measure. 
Mr. Cunningham, M.R.C.V.S., in the Veterinary Journal for 
last October, gives a record of a number of outbreaks of the dis¬ 
ease successfully combatted by inoculation, and towards the con¬ 
clusion of his interesting article he says : “ Let our students study 
inoculation ; let practitioners all over the country make them¬ 
selves masters of its details and experts in its practice; ” “ and 
when all our veterinary surgeons can perform, and perforin 
rightly, and carry out the process to its conclusion, then let inocu¬ 
lation be made compulsory.” 
Pleuro-pneumonia contagiosa is a contagious eruptive fever, 
and the lung changes are the result and a symptomatic feature of 
the disease, and Nature in her efforts to eliminate the disease 
from the system throws it off by the lungs. Inoculation means 
the introduction into the system, through an opening in the skiu, 
