352 
MISCELLANY. 
of caoutchouc tied down upon the neck of the bottle." The plan has 
been practised by M. Fayard for four years, and the juices thus kept have 
answered the purposes of those recently prepared equally well. 
Journal de Fftarmacie, 
Glycerine.— -yi, Pelouse communicated to the Societe de Pharmacie 
(July, 1836,) the principal results of his investigations upon this princi- 
ple. He deduces the following : — 1. That glycerine readily combines 
with sulphuric acid, and forms with it an acid, sulpha glyceric^ analogous 
to sulphovinic acid, and capable also of forming salts. 2. That this 
sulpho-glyceric acid contains glycerine in an anhydrous state, and that it 
can undergo a true saponification, in such a way, that by treating it with 
a mineral base in excess, a sulpho-glycerate is first obtained, and then a 
sulphate of the same base ; finally, hydrated glycerine, exactly similar to 
that which is disengaged from fatly bodies during saponification. 
M. Pelouse concludes, from these well ascertained facts, that fatty 
bodies ought henceforward to be considered as true anhydrous salts, with 
glycerine as their base, which had been conjectured by M. Chevreul. 
Journal de Chemie Medicate, 
Formula for syrup of codeia, by M, Cap, — The authors of the new codex, 
not having given the formula for the syrup of codeia, frequently prescribed 
by some physicians, I have thought it would be useful to publish that 
which I have followed for several years, as also the method pursued by 
me in its preparation. 
R. Crystallized codeia, 24 grains. 
Distilled water, 4 ounces. 
Very white broken down sugar, 8 " 
Reduce the codeia to an impalpable powder in a glass or porcelain 
mortar. Triturate it with a third of the water; allow it to settle, and 
decant. Act upon the residuum with another third of the water, and then 
again with the remainder. Reunite the whole in a small matlrass, cover- 
ing the opening with a piece of moistened parchment pierced with a pin 
hole. Heat in a saltwater bath, until the codeia has entirely disappeared; 
remove the mattrass from the fire to add the sugar, cover the opening 
anew, agitate it, plunge it again in the bath, and allow it to remain until 
the sugar is completely dissolved. Filter the syrup through paper, in a 
cool situation, and preserve it by the ordinary means. 
This method has for its aim, the avoidance of prolonged contact with 
heat, which would have more than one inconvenience. If the pulverized 
codeia were solely brought in contact with hot water, it would remain a 
long time before being dissolved, under the form of oily globules ; while on 
the contrary, when reduced to a very fine powder, it is dissolved at a low 
