250 
ARSENIOUS ACID. 
violently or suddenly ; nor did I ever witness any unfavor- 
able symptom arise from its exhibition. 
My general course of procedure is as follows : I usually 
commence with ten-grain doses, in the form of powder, and 
combined thus — 
5t> Acid. Arsenios., gr. x ; 
Pulv. Glycyrrhiz., 5j ; 
Pulv. Capsici, gr. v. M. ft. pulv. 
This I direct to be given, at first, every day, mixed with the 
animal’s food ; and if, in the course of a few days, I perceive 
no alteration to have taken place in my patient, I order the 
dose to be repeated every twelve hours. On the paper con- 
taining the pow r ders are printed the directions, and in large 
letters the word Poison, so that no accident may arise. 
It may be asked, why combine cayenne pepper with the 
arsenic ? My reply is, that by so doing I more effectually 
prevent an accident arising. Grooms and horse-keepers will 
often, with a view to discover its nature, taste a powder ; and 
doing so with this, the pungency of the pepper induces them 
to spit it out again, and thus the arsenic is not swallowed by 
them. 
I will now give an illustrative case. On referring to my 
diary, I find that ten grains of arsenious acid w r ere given to 
a four-years-old entire horse, affected with glanders, night 
and morning, for sixteen weeks ; so that the large quantity of 
more than four ounces and a half of this mineral substance was 
administered with the most satisfactory result, for soon after 
the termination of this period, he was sold as cc sound,” and 
used for the procreation of his species. 
In several other cases I perceive, when it has not had its 
desired effect as soon as anticipated, its use has been con- 
tinued in for nearly as long a time without its producing the 
least indication of poisoning. 
I have seen a great number of cases of accidental poison- 
ing by this agent in most of our domesticated animals, viz., 
the horse, cow, sheep, pig, and dog. Also, under different 
forms of administration, both when it has been taken into 
the stomach slightly diluted and also largely diluted. Like- 
wise, when it has been applied to the surface of the body in 
various degrees of strength, and particularly when it has 
been brought freely in contact with a recent wound. 
I have alluded to these instances for the purpose of ob- 
serving that, in Mr. Truckle’s cases, there was something 
peculiar and unusual as it respects the paralysis observed by 
him. This is an effect I have never yet seen. The pendent 
