EFFECTS OF HYDROCYANIC ACID IN TETANUS. 535 
hind extremities lost their power of support, and seeming 
delirium took place, the eyes having the same wild appearance 
as when the three drachms were inserted underneath the 
skin, with contraction of the iridis, and partial insensibility to 
light ; and the palpebrae also became affected with the like 
peculiar motion. The whole frame was in a state of extreme 
excitement, and the animal was expected suddenly to fall. She 
then voided her faeces, after which the symptoms gradually 
subsided, and she experienced no return of them whatever. 
On the following morning, she appeared quite well, was 
eating heartily, her pulse 36, and regular, but feeble. 
It having been neglected to ee back-rake” the animal prior 
to the administration of the acid, it was determined to repeat 
the experiment the next day. Two fluid drachms of the 
acid mixed with a pint of water were consequently thrown up 
as a clyster. In four minutes, the pulse rose from 40 to 60 
beats in the minute, and all the other symptoms which before 
were manifested again showed themselves, but in a greater 
degree of intensity: the eye had more the appearance of 
semi-transparent glass ; the haw was protruded over it ; all 
the muscles of the frame were violently convulsed ; she 
staggered and fell. After lying a few seconds, she seemed to 
be in a state of madness : she attempted to rise, but was 
unable ; she then rolled violently on her back, drawing her 
hind legs up towards her abdomen ; afterwards having 
managed partially to raise herself, she beat her head against 
the wall, and endeavoured as it were to mount it with her fore 
feet. After this she lay for some time almost exhausted. 
Her pulse could be taken only with extreme difficulty, which 
was 160 beats in the minute ; and the respiration most 
laborious. This violent action gradually subsided, and in 
about ten minutes the animal was on her legs again, and free 
to all appearance from the effects of the medicine. She now 
seemed very anxious for food, and was allowed it. In half an 
hour after, she was left, not having experienced any return of 
the symptoms, feeding heartily, but the pulse beating 120. 
Ultimately, she perfectly recovered from all the effects of 
the acid. 
THE EFFECTS OE HYDROCYANIC ACID IN A CASE OF 
TETANUS IN AN ASS. 
To an ass laboring under tetanus, apparently arising from 
exposure to cold, two drachms of the medicinal acid were 
inserted, in the form of a rowel, underneath the skin of the 
