264 
POISONING OF CATTLE BY ARSENIC. 
kennel, she would stagger about for a few moments, and her 
sight was impaired, as evinced by her inability to see a hare 
in coursing : she had voided a worm now and then. 
I administered the areca nut, in powder, in a two-drachm 
dose in milk, having previously prepared her, by keeping her 
without food for twenty-four hours. In a quarter of an hour 
there was expelled a mass of tape-worms, which, upon careful 
examination, I ascertained to consist of the great number of 
forty-three. They varied in length from an inch to three feet, 
and each had a perfect head. 
I have been induced to send this account for insertion in 
your journal, because I have rarely heard of the head of the 
parasite having been discovered, either in the human subject 
or the dog, although careful search has been made for it. 
I saw, a little while since, a tape-worm that had been voided 
by a greyhound of the extraordinary length of thirteen yards 
and two feet, which had been also expelled by the areca 
nut. 
I think these two instances prove the power of this agent 
in the dog. I have not heard any satisfactory account of its 
action on the horse, but should think that it well deserves a 
trial in that animal. 
POISONING OF CATTLE AND A PONY BY 
ARSENIC. 
By John Harrison, V.S., Brough. 
As cases of poisoning by arsenic are not unfrequently re¬ 
corded in the pages of the Veterinarian , I hope I shall not be 
accused of egotism in sending you the particulars of a case, 
with the analysis, &c., which has recently come under my 
observation. 
During the last winter and spring, at intervals of a few 
weeks, Mr. Robert Thornborrow, farmer, of Mallerstang, 
a place about ten miles distant from Brough, lost three 
valuable cows, one stirk, and a pony, under circumstances of 
a mysterious nature. 
As I did not attend any of the cases, I give the history 
of the malady with which they were supposed to be affected, 
on Mr. Thornborrow*s authority, and which I have every 
reason to believe is correct. All the animals appeared to be 
well at bed-time; they had eaten up their last meal, and 
no previous diminution of the lactatory process had been 
