70G 
Yeio Puisoninj. 
animals in severe winters, in small quantities, but during con- 
siderable periods, without any accidents resulting. On the 
other hand, he states that M. Baillet gave 56 lb. of leaves to a 
cow in 13 days, without any untoward consequences to the 
animal, which had taken more than 4 lb. of leaves daily. M. 
Phillipaux gave 12^ grains of leaves cut up and mixed with its 
food, every morning for 60 days, to a young rabbit, w'ithout in- 
jury to its health, or any arrest of its growth. 
Concerning the symptoms noted in animals, M. Cornevin 
says that, when the quantity of yew taken is small, it requires 
attention to discern symptoms of a specific kind. A little 
agitation, and slight influence upon the circulation and respira- 
tion, evinced by a rise in the temperature, are all that are caused. 
When the dose is greater, yet not mortal, the agitation is more 
pronounced. Nausea happens in the dog, pig, and duck. Some- 
times instead of this there is a continual attempt to sw'allow, as 
if the animal wished to relieve its pharynx from some obstruc- 
tion. A state of coma then supervenes. The pulse is slow and 
weak, the animal moves with difflculty, more as if overcome 
by sleep than from actual muscular weakness. The temperature 
is low, the skin and extremities are cold. The head hangs down 
and the eyes are half closed, and the animal is prostrate. In 
some cases gravid animals have suffered abortion. 
In the horse, muscular tremblings have been remarked, par- 
ticularly around the croup, with frequent emissions of urine. 
Rumination is suspended in cattle and sheep. Flatulency 
with eructations is common, and occasionally vomiting. 
The pig hides its head in the litter and sleeps heavily, with 
intermissions of vomiting and moanings. 
Poultry have their feathers ruSled, the head seems too heavy, 
the wings hang down, and coma is overpowering. 
When the quantity of poison is sufflcieut to cause death, two 
forms are common. 
In the first, the two phases of excitement and coma which 
have been described are disidayed, and terminate in death, which 
comes in a rapid and startling manner, in from 10 minutes, 50 
minutes, one hour, two hours, or more, after the introduction of 
the poison into the system. 
M. Cornevin gives the symptoms in a dog under whose 
skin 310 grains of the juice of yew leaves had been injected. 
These commenced three minutes after the injection, and the 
animal died in forty-two minutes, having been almost throughout 
in a comatose state. 
In sheep and pigs, after a meal of leaves of yew, the 
same symptoms were noted as in the dog, but the process was 
