CARBOLIC ACID AND HUMAN PARASITES. 
211 
late of glycerine ). In this state it can be equally diluted to any degree of 
strength. 
In general, a dose of carbolic acid is 1 grain in an ounce of water. 
As a gargle, 1 or 2 grains to an ounce of water. 
As an injection, 1 grain to 4 ounces of water. 
As a lotion, 15 grains to an ounce of water. 
As an ointment, 16 grains to an ounce of benzoated lard. 
As a liniment , 1 part to 20 of olive oil. 
As a plaster, 1 part of carbolic acid to 3 parts of shellac. 
The crystallized carbolic acid to be used as a caustic. 
The carbolate of glycerine, as above, use in 1 or 2 drop doses, internally. 
Antiseptic oil for abscesses, 1 part of acid to 4 of boiled linseed oil. 
Antiseptic putty, 6 spoonfuls of the antiseptic oil mixed with whiting. 
Aqueous solution of carbolic acid is 1 part of acid to 40 of water (1 ounce 
of acid to a quart of hot water well agitated and filtered). 
Sick-rooms, to disinfect: place a portion of the dissolved crystals in a porce¬ 
lain dish, and float it in a larger vessel of hot water. 
Disinfecting purposes generally : 1 pound of crystals to 6 gallons of water. 
Fluid, 1 part to 80 of water. Fowder, 1 ounce of crystals with 4 pounds of 
slaked lime. 
Tor drains: 1 pound of the fluid carbolic acid to 5 gallons of warm water. 
Tooth-ache is often cured with 1 drop of carbolate of glycerine; and diar¬ 
rhoea arrested in half an hour with 2 drops in a wiueglass of water. 
In all cases of parasitic life it is advisable to commence with very dilute 
carbolate of glycerine. 
Inasmuch as carbolic acid will destroy the power of vaccine virus, it be¬ 
comes an interesting inquiry as to the possibility of using carbolic acid in¬ 
ternally as a preventive, so as to fortify the human system against the incom¬ 
ing of zymotic diseases. 
I have some striking facts in support of this probability; but my observa¬ 
tion has been too limited to do more than incline to the belief; and here I 
leave it in the hands of the Conference, expressing my readiness to give fur¬ 
ther details if the members desire it. 
The President congratulated his fellow-members that, if the author’s statement of 
the parasitic population of the human body was an alarming one, they might find com¬ 
fort in the virtues of carbolic acid, which he had also asserted. 
Mr. Yewdall (Leeds) noticed that the author of the paper advised olive oil for ad¬ 
mixture with carbolic acid, to produce antiseptic putty. Professor Lister had recom¬ 
mended linseed oil, and he would be glad to know in what the advantage of olive oil 
consisted. 
Mr. W. V. Wright (London) pointed out the unusual character of this paper, the sub¬ 
ject having been treated therapeutically, and not from a pharmaceutical point of view. 
He thought the introduction of questions of curing diseases was altogether out of place 
there. 
Dr. F. Crace Calvert, F.R.S. (Manchester), said he was constantly receiving inqui¬ 
ries from pharmacists and other chemists as to the mode of using carbolic acid in parti¬ 
cular cases, and it was impossible for persons to understand enough of the use of this 
substance unless they were informed as to its qualities. It was a powerful agent for 
good when applied with skill and knowledge, and it was a dangerous one if used with¬ 
out these guides. It was very desirable that all who had to do with carbolic acid for 
medical purposes should understand the great change produced by its admixture with 
glycerine. It was certain that the union of these two substances was a true chemical 
combination, by which the activity of the carbolic acid was much modified. Pure car¬ 
bolic acid is a caustic, but a mixture of equal parts of carbolic acid and glycerine does 
not possess caustic qualities. He did not hesitate to say that the internal use of carbo- 
