tal they use a
preservative fluid, invented by the hospital porter (dissecting-room
porter). The subjects are kept in a slate tank filled with the fluid.
To show the efficiency of this fluid, I might mention that the first
subject arrived much decomposed some months since, but is now quite
fresh and sweet. The muscles inevitably lose a little of their colour
in the preparation, which is all the change as yet observed. At Guy's
is used a preparation of glycerine and arsenic, but at the present
moment I do not recollect the exact proportions. At King's College,
the method invented by Sterling, of Edinburgh, is used. All other
hospitals have the old methods in vogue, such as preparations of
arsenic."

Since then, I have had occasion to go more deeply into the subject and
have used some of the formulae which follow, viz, rectified spirits,
Moeller's Solution, and various preparations of lime.

Messrs. Medlock and Bailey's bisulphite of lime (calcium) is most
highly recommended by analytical experts for preserving large joints
of meat and fish; and, indeed, the experiments conducted under
scientific and Government supervision have abundantly proved its
value. Its price is not great. For large joints the following is the
formula:

No. 11.--Messrs. Medlock and Bailey's Formula.

Bisulphite of lime, 1 gall.

Common salt, 0.25 pint.

Water, 2 to 4 galls.

The following, taken from the "Year Book of Pharmacy for 1880,"
appears to be a very efficient formula; like all the rest of such
formulae, it contains a certain percentage of arsenious acid:

A new Preserving Fluid.--The Prussian Secretary of State for Education
has caused the publication of the following compound and method of its
application, discovered by Wickersheimer, the Preparator of the
Anatomical Museum of the University of Berlin, who had at first
patented the compound, but was induced to renounce his patent claims.

No. 12.--Wickersheimer's Preserving Liquid, No. 1.

In 3000 parts of boiling water dissolve 100 of alum, 25 of sodium
chloride, 12 of potassium nitrate, 60 of potassa, and 10 of arsenious
acid, let cool and filter. To every 10 litres of the filtrate add 4
litres of glycerine and 1 litre of methylic alcohol. [Footnote: A gram
= 15.444 grains troy; a litre = a little more than 11 pints.]

Its application differs with the special objects to be preserved. In
general, the objects must be impregnated with it. If the object