VETERINARY MEDICAL SOCIETY. 295 
respiration. Last year, in a variety of horses ill at the same time, 
the pulse was more than 84. This year, in as many cases, it 
scarcely exceeded 42. He urged the necessity of auscultation. 
In both of the cases referred to, the difference in the respiratory 
murmur might be easily detected. The disease was inflamma¬ 
tion of the sub-mucous tissue of the air cells. If not checked 
by copious bleeding, it went on until effusion took place in the 
cellular substance beneath this tissue. If the case was reported 
when the lassitude first took place, the horse did well. If neg¬ 
lected at first, the termination was usually fatal. Copious 
bleeding was indicated at first, and repeated according to the 
nature of the murmur. The difference in the respiratory murmur 
was one of the most important tests we had to ascertain the 
existence, and nature, and progress of the disease. 
Mr. J. Turner again recalled the attention of the Society to 
the fact, that two or three horses will breathe the air of a close 
stable with comparative impunity; but if there be nine or ten, 
although the stable be proportionably larger, pneumonia will be 
more frequent and fatal. An animal poison was engendered, 
which infected the very walls of the stable ; nor could the infec¬ 
tion be got rid of until the place was thoroughly cleansed and 
ventilated. 
Mr. Mavor could not perfectly coincide with this. In the late 
severe weather, he could not perceive that horses in large stables 
were oftener attacked than others. 
Mr. T. Turner confirmed his brother’s opinion. The disease 
was rare where there were only two or three horses in the 
stable, but sadly prevalent and fatal where there were ten or 
twelve. The chances were six or seven to one in favour of the 
single horse, or where only two or three were kept. It seemed to 
be some virulent poison engendered where many breathed the 
same air. 
Mr. Field, as a proof of the locality of the disease, stated, that 
it occasionally raged in the Regent’s Park Barracks, and not in 
Hyde Park, and vice versa; and that it attacked horses whether 
in the stable or on duty. It was, however, engendered, without 
doubt, in the stable. 
Mr. Lythe stated, that the dragoons at Weymouth used to be 
exercised on the beach. They were very subject to pneumonia, 
and he attributed it to the east wind blowing upon them from 
the sea. 
Mr. Langworthy was questioned as to the unusually small 
quantity of blood" which he abstracted, and the circumstances 
which guided him. He replied, that he would rarely take more 
than four quarts at first. If, at the expiration of six hours, the 
