410 
HART ON THE GREEN NAPHTHA. 
report also addressed to the House of Assembly by Mr, Abel 
Stuart, in July 1830, proposals were made for building a hospital 
near the springs, for the reception of those cases in which their 
products had been found thus highly efficacious, and a bill has 
since passed for effecting this humane and useful object.” 
We have most to do with it as a veterinary medicine. Here 
Mr. Hart shall speak for himself. 
“ When the true rock oil is administered internally, its action 
appears to be that of a mild stimulant, and of such a particular 
nature as may be advantageously employed in all cases re¬ 
quiring such a remedy. It also appears to possess a singular 
power of allaying irritation ; whereas most of those substances 
which have been used in lieu of it, as common tar, &c. act more 
or less as irritants, especially when they are applied externally. 
From its use, the different functions, as those of the stomach, in¬ 
testines, liver, kidneys, and skin, are promoted and increased ; 
and of so powerful and penetrating a nature is the true rock oil, 
with respect to the horse, that when he has been largely dosed 
with it, and soon after exercised, the rider may,in many instances, 
very perceptibly distinguish the odour of it: when a large dose, 
as from half a pint to a pint, is exhibited, a laxative effect is most 
frequently found to follow. 
“ In very active inflammatory affections, our own experience 
will not warrant this medicine being trusted to alone, nor have 
we been in the habit of using it in the early stages of active in¬ 
flammation ; but in a communication from Mr. Leigh, an ex¬ 
perienced veterinary surgeon at Bristol, he therein states that he 
has been in the habit of using it for inflammation of the lungs 
and kidneys. After the active symptoms of inflammation have sub¬ 
sided, we can bear ample testimony of its efficacy, and ap¬ 
parently to the particular powet it possesses of stimulating 
without producing irritation, and possibly also to its allaying it at 
the same time. 
“ As an internal remedy, this substance can be administered to 
horses and other animals, either in the form of balls, which may 
be made by mixing it with some sort of powder, as linseed meal, 
commcn flour, liquorice root powder, &c. or it can be given as a 
drench, by first combining it with an equal quantity of treacle, 
with which it easily unites, and afterw ards mixing it with a proper 
portion of thick warm gruel. It should be administered according 
to circumstances, to horses, in doses from six drachms to an 
ounce, up to eight or twelve ounces. 
“ Externally applied, the rock oil appears to act as a moderate 
stimulant, and to produce its effects without irritation, but rather 
to allay it when properly applied. It promotes absorption in all 
