MODE OF PREPARING EPISPASTIC PAPER. 
279 
ART. LXXVIL— MODE OF PREPARING EPISPASTIC PAPER 
By Wislist. 
The great use made at the present day of epispastic 
paper, in the healing of blisters, the good effects that have 
arisen from it, in addition to the facility of its application, 
have brought this preparation into great favor ; still, as the 
mode of manufacturing it was unknown, it remained a 
monopoly for a few of the pharmacopolists of the capital. 
I am only speaking here of the method employed for spread- 
ing the composition on the paper, not of the composition 
itself, most books of instruction containing several formula?. 
Every treatise on pharmacy, even the most recent, direct 
the employment of the common spatula, an impossibility 
when you consider the consistence of the matters employed, 
which will always be, according to the temperature, either 
too fluid or too solid, and they can never preserve their 
fluidity like various compositions employed in the making 
of plasters. 
As we know that all these epispastic preparations have 
for their base hog's lard and bees ? -wax, a substance which 
has never more than middling consistence, and passes, with- 
out transition, from excessive fluidity to a consistence too 
solid to be spread by the spatula. On this account, after 
having vainly attempted this method, I proceeded in search 
of another, and the following is a plan by which I was suc- 
cessful : — 
After having prepared a number of strips of fine white 
paper, not much sized, 6 centimetres 3 millimetres in width, 
and 45 centimetres in length, I melted the epispastic com- 
position in a plate, placed above a vessel of boiling water; 
I took the extremity of one of the bands of paper in the left 
hand, while, with the other hand, I held the other end of 
the paper raised in such a manner that described the arc of 
