80 PROGRESS OF VETERINARY SCIENCE AND ART. 
the heart there was little blood and air. The endocardium 
was of a dark red colour. In the arteries there was no air, 
and there was no morbid alteration observable elsewhere. 
Stockfleth concludes that the horse died in consequence of 
development of gas in the veins, and accumulation of the 
same in the right side of the heart. It is well known that the 
entrance of air into veins is a very dangerous and often fatal 
accident, although a correct explanation of the cause of death 
is still wanting; sometimes a horse may receive a considerable 
quantity of air into the veins without dying . — TidsJcrift fur 
Veterinairer , vol. iii, Copenhagen. 
The case spoken of by Stockfleth is a very remarkable one; 
but there is, so far as we can see, proof wanting to demonstrate 
that gas was developed in the blood during life. Admitting 
the existence of this gas, a question presents itself as to 
whether it acts in inducing death like air introduced into 
the venous system. The explanation of death from the latter 
cause is sought for as a physical phenomenon ; whereas, 
when a gas is formed, it may be poisonous like sulphuretted 
hydrogen. Gas, it is true, is disengaged before death in 
the subcutaneous cellular tissue in certain maladies, and it is 
looked upon as a sign of incipient decomposition; perhaps 
the gas occurs in the blood under the same circumstances. 
I have not unfrequently seen vesicles filled with gas in the 
blood of dogs, but only some time after death ; and on micros- 
copic examination the blood was found crystallized, indicating 
that changes of a very important kind had occurred since 
the animals had expired. I have, moreover, only seen this 
after having injected putrid water into the animals’ veins. 
The heart in Stockfleth’s case was found distended with 
gas ; to bear on this fact, as proof of the possibility of gaseous 
development during life, it is said that in attempting to kill 
animals by blowing air into their veins, much air may be 
introduced before the desired end is attained. It must be 
borne in mind, that sometimes this operation is not very care- 
fully performed, and the tube used for insufflation, instead 
of entering the vein, finds its way into the cellular tissue, 
and many mistakes have arisen from this accident also in the 
act of introducing agents into the blood. 
Sturdy in Cattle. — No less than seven bladders of the 
ccenurus were found in the left hemisphere of the cerebrum, 
in an old cow affected with sturdy. Between the dura mater 
and the cranial parietes there were several transparent vesicles 
about the size of a pea, imbedded in the substance of the 
bones. The left hemisphere of the cerebrum only weighed 
