218 Mr. Brodie’s Observations and Experiments 
very soon afterwards with the urine, I thought it probable 
that arsenic might be separated with the urine also ; but Mr. 
Brande (to whom I am indebted for assistance on this, as well 
as on many other occasions) could never detect the smallest 
trace of arsenic in it. 
IV. Experiments with the Muriate of Barytes. 
When barytes is taken into the stomach, or applied to a 
wound, it is capable of destroying life ; but when in its un- 
combined state its action is very slow. The muriate of barytes, 
which is much more soluble than the pure earth, is (probably 
on this account) a much more active poison. 
Experiment 5. Ten grains of muriate of barytes rubbed very 
fine, and moistened with two drops of water, were applied to 
two wounds in the thigh and side of a rabbit. In four minutes 
lie was evidently under the influence of the poison. In a short 
time he became giddy : then his hind legs were paralysed ; 
and he gradually fell into a state of insensibility, with dilated 
pupils, and lay, in general motionless, but with occasional con- 
vulsions. The pulse beat 150 in a minute, but feeble, and it 
occasionally intermitted. He was apparently dead in twenty 
minutes from the application of the poison ; but on opening, 
the chest, the heart was found still acting, and nearly three 
minutes elapsed before its action had entirely ceased. 
Experiment 6 . An ounce and an half of saturated solution 
of muriate of barytes was injected into the stomach of a full 
grown cat, by means of an elastic gum tube. In a few minutes 
it operated as an emetic. The animal became giddy, after- 
wards insensible, and lay with dilated pupils, in general mo- 
tionless, but with occasional convulsions. At the end of sixty- 
