136 TUBERCULOUS DISEASE OF ANIMALS IN INDIA. 
less that was said about it the better, as it was not so mild as 
when the disease happened spontaneously. It will be seen 
by reference to my paper that I thought this difference arose 
from “ the mild or malignant nature of the fever.” The very 
same has happened in the inoculations from mild and malig- 
nant cases of pleuro-pneumonia, proving that the late Pro- 
fessor Coleman was right. “ It does not follow that though 
it is produced by the same cause it should take on the same 
specific action.” Dr. Willems rests on the specific action 
alone as being preventive, by inoculation of exudative pleuro- 
pneumonia; and in my opinion the question is not what 
occurs in other specific diseases, but simply whether by deep 
inoculation animals are seasoned for a limited period, which, 
with animals being fed for slaughter, is all that is required; 
and Mr. Paget is satisfied so far, and has practically settled 
it for himself. But he has yet to find out whether predispo- 
sition, in animals kept for a longer period, to other forms of 
tuberculous disease, remains. Mr. Tumbs thinks so of the 
vesicular epizootic, (as the late Professor Coleman) that it 
arises from the same cause. Vide No. 51 of the Veterina- 
rian for March, 1852, p. 137. Inoculation will not enable 
their owners to keep cattle in close* filthy places, as they 
are now kept in towns and some parts of the country, in 
Europe, without being liable to disease in some other, per- 
haps incurable, form. I am not near enough the British 
Museum library, or I believe I could prove from history 
that epizootic diseases have always prevailed in some coun- 
tries on the continent of Europe in times of peace. The 
epizootic mentioned was not during the wars of the Emperor 
Charlemagne ; but when his dominions in Germany had 
enjoyed ten years’ peace, and cattle had accumulated. Great 
numbers of cattle have been bred and reared in all countries, 
* King Oscar’s body physician, Dr. Liljevalch, has published a most 
interesting pamphlet on “ the necessity for fresh air in barracks.” He 
shows that the enormous mortality of the garrisoned troops in the chief 
European armies, that of England included, is largely owing to the small 
quantity of fresh air allowed them, especially by night. The ventilation 
system recommended by the author is that of M. Leon Diwoir. The quan- 
tity of pure air required by each soldier he estimates at 48 cubic metres, 
which no European army even approaches. The Swedish army regulation is 
based on only 240 cubic feet, or 8 cubic metres per man, one-sixth of the 
quantity indispensable for health. The consequence is that the soldiers are 
poisoned by carbonic acid gas. The European soldiery are the flower of 
their youth, but in Erance 19 in 1000 of these men die annually, while of 
the male population there is only a mortality (between 20 and 30 years of 
age) of 10 per 1000. In England the mortality in the Eoot Guards, from 
consumption, is 14T per 1000, which is three times the average of the 
general population. 
