BY EDWARD PALMER. 25 
consumed with the disease, scarcely any of it left, and 
the cavity of the chest filled with a quantity of amber- 
coloured liquid, sometimes mixed with blood. The 
wonder is, that any beast could have lived so long with 
such an amount of corruption and decay going on in 
its inside. Sometimes the calves are born with the 
disease, in which case they are very miserable and wéak, 
and seldom live long. 
There is another form of this disease which it would be well to 
notice, because death is frequently attributed to poison, when it 
is reality nothing else but sudden death from pleuro. In the 
early stage of the disease a partial cure is effected, and the dis- 
eased part of the lung is separated from the sound part bya 
covering or sac, and in time absorption would likely remove the 
latter, but the animal being subjected to hardship or droving or 
knocking about, the covering bursts and the contents spreading 
over the lungs and diaphragm causes the beast suddenly to sink 
and die. ‘This is an explanation given by Mr. A. Bruce, Inspector 
of Stock in New South Wales, and accounts for the sudden deaths 
on the road which drovers sometimes attribute to poisonous plants. 
The question has frequently arisen if legislation should not be 
adopted with the object of instituting compulsory inoculation, 
seeing that inoculation is decidedly a preventive of pleuro- 
pneumonia. But the conclusion is forced on us that if such 
legislation should be enacted, it would be futile on account of the 
impossibility of seeing to the carrying of it out, and it would be 
very unwise to make enactments and allow them to become a 
dead letter. 
But if the virus could be grown or cultivated, and become 
available at all times and seasons, and ot sufficiently guaranteed 
strength to ensure exemption from the disease for the lifetime of 
an animal, the protection which such a power would bestow on 
travelling cattle would insure private interests and enterprise 
adopting such a remedy at whatever cost. In such a case legis- 
lation would be unnecessary, the man whose stock was safe from 
pleuro would command the market, besides saving himself from 
iosses when compelled to travel them to market himself. 
We have seen that scab in sheep, a disease which threatened 
to overwhelm the flocks in Australia, has been now obliterated 
by the discovery of the habits and growth of the microscopical 
insect which caused the distemper, that a systematic application 
of the remedy resulted in freeing all the sheep in Australia 
