244 
VETERINARY TOXICOLOGY. 
In 1869 I was sent for again to the same farm, to see 
some cattle, eleven in number, that had got at the same yew- 
trees. Upon my arrival I found one dead, and, on post¬ 
mortem examination, I found a large quantity of yew-leaves 
in the stomach, the others showing the symptoms which I 
had previously observed; but in this instance there were 
more that had distension of the stomach. I gave to each the 
same quantity of Magnesia Sulph. and Ammonia as before, 
and introduced the trocar into all their stomachs, and in each 
case a large quantity of gas was eliminated, and I am glad 
to say that all these beasts recovered. 
Again, in 1867, I was sent for in great haste to see a 
bullock that was thought to have died from cattle plague, 
about four miles olf; he had been on a pasture with eleven 
others, which had been hired by a neighbouring farmer for 
them to graze upon. Upon making a post-mortem examina¬ 
tion, I found a large quantity of yew in the stomach, which 
was greatly distended. I then searched the pasture, and 
found a quantity of yew-trees in a cluster, which had evi¬ 
dently very lately been partaken of by the bullocks. I at 
once had the remainder of them walked home to the farm, a 
distance of two miles, and as soon as possible they each had 
the same dose of medicine given them; the next day they 
were all purging from its effects, and they also all recovered. 
Whether or not they had all partaken of the yew I cannot 
say, but I thought it best to be on the safe side, and treat 
them all alike. I ought perhaps to observe that they showed 
no signs of distension of the stomach. 
Now, from my experience I have come to the conclusion, 
if in cases of extreme distension relief is timely afforded by 
the introduction of the trocar, and the mechanical obstruction 
removed, with the assistance of aperients and stimulants, less 
cases of death from yew would take place. 
I merely offer these remarks to induce others, when called 
in to attend similar cases, to give the trocar a fair trial. 
VETERINARY TOXICOLOGY. 
Ry John Gerrard, M.R.C.V.S., Market Deeping. 
Arsenical Poisoning. 
The acute toxic effects of this substance on ruminants arc 
rarely observed, although cases of chronic arsenical poisoning, 
as the result of emanations from mines and manufactories, 
are not uncommon. The effects seem pretty uniform,'how- 
