96 
ON TINCTURE OF KINO. 
have only to place broken glass, straw, or cotton, in the lower 
part of the instrument, and cover with sand or animal char- 
coal ; then pour on^ the liquid, reject the first portion that 
passes till it comes through clear. In this way, much time v 
and trouble may be saved. Too much cannot be said in praise 
of this invention. I have now done with the subject, and 
hope that, as it becomes better understood, persons who make 
successful experiments will give them publicity, for the bene- 
fit of our profession. 
June 11, 1840. 
ART. XV.— NOTE ON TINCTURE OF KINO. By S. Shepherd. 
My attention having been called to the subject of displace- 
ment by the article on that subject in the third number of the 
last volume, I prepared a Tincture of Kino by that process, 
which has given me much satisfaction. I prepared, at the 
same time, a small quantity of the tincture by the usual mode. 
In less than four weeks, the last has displayed the disposition 
to gelatinize, while the first is as limpid as possible. I also 
prepared a tincture ofnux vomica by the displacement mode, 
which gives me entire satisfaction. I would suggest to my 
brethren in Pharmacy, that an advantage would result 
from dividing the menstruum into three parts, and returning 
each part several times upon the ingredients, thus ensuring 
the complete saturation of the two first, and being certain that 
the last part exhausts all the active principle. 
Seventh month 1st, 1840. 
