PHARMACY. 
405 
Take of purified quicksilver four parts; di- 
luted nitrous acid live parts ; distilled water 
fifteen parts ; water of carbonat of ammonia 
as much as sufficient. Dissolve the quick- 
silver in the acid; add gradually the dis- 
tilled water; then pour on as much of the 
water of carbonat of ammonia as will suffice 
to throw down the oxide of quicksilver, 
which is then to be washed with pure water 
and dried. 
This has lately been recommended by 
Dr. Home and others as one of the most effi- 
cacious and permanent of antisyphilitic reme- 
dies. Dose one grain. 
Oxidum hydrargyri rubrum per acidum 
nitricum, red oxide of quicksilver by nitrous 
acid, Ed. Hydrargyrus nitratus ruber, Lon. 
Take of purified quicksilver one pound ; of 
diluted nitrous acid sixteen ounces. Let 
the quicksilver be dissolved, and with a 
gentle tire evaporate the solution into a 
dry white mass, which rubbed into powder 
is to be put into a glass cucurbit, a thick 
glass plate being put over its surface ; then 
having adapted a capital, and placed the 
vessel in sand, let it be roasted with a lire 
gradually raised until it assumes the form of 
small red scales. 
This is used as an escharotic. 
Subsulphas hydrargyri flavus, yellow sub- 
sulphat of quicksilver, Ed. Hydrargyrus 
vitriolatus, Loud. 
Take of purified quicksilver four ounces ; 
sulphuric acid six ounces. Put them into 
a glass cucurbit, and let them boil in a 
sand-bath to dryness ; the white matter re- 
maining at the bottom of the vessel being 
powdered, is to be thrown into boiling 
water; it will thus be changed into a yel- 
low, which ought to be frequently washed 
with warm water. 
This preparation, formerly denominated 
turpeth mineral, is scarcely at present em- 
ployed in medicine. 
Sulphuretum hydrargyri nigrum, black sul - 
phuret of quicksilver, Ed. Hydrargyrus cum 
sulphure, Lond. 
Take of purified quicksilver and sublimed 
sulphur, of each equal weights. Let them 
be rubbed together in a glass mortar with 
a glass pestle, until the globules of quick- 
silver entirely disappear. 
This is vulgarly denominated ethiops 
mineral. It is the least active of all the mer- 
curial preparations, and is not much in use. 
The following additional preparations of 
mercury are found exclusively in the Ph. 
Lond. 
Hydrargyrus sulphuratus ruber, red sul- 
phureted quicksilver. 
Take of purified quicksilver forty ounces ; 
sulphur eight ounces. Mix the quicksilver 
with the melted sulphur. If the mixture 
inflames, extinguish it by covering the ves- 
sel. Powder and sublime tire material. 
This (cinnabar) is principally used to 
fumigate venereal ulcers. 
Hydrargyrus cum creta, quicksilver with 
chalk. 
Take of purified quicksilver three ounces; 
prepared chalk five ounces. Rub them to- 
gether till the globules disappear. 
This is scarcely employed. 
Hydrargyrus calcinatus, calcined quick- 
silver. 
Take of pmrified quicksilver one pound. Ex- 
pose it in a glass cucurbit with a flat bot- 
tom, in a sand-bath, to a heat of 600°, until 
it concretes into a red powder. 
This has beeii recommended in doses 
of half a grain or a grain in confirmed sy- 
philis, which has appeared to oppose other 
mercurial preparations. 
Calx hydrargyri albi, white calx of quick- 
silver. 
Take of muriated quicksilver, sal ammoniac, 
water of prepared kali, of each half a 
pound. First dissolve the sal ammoniac, 
and then the muriated quicksilver, in dis- 
tilled water, to which add the water of 
prepared kali. Wash the powder until it 
is tasteless. 
W Lite precipitate, as the above prepara- 
tion is commonly called, is used externally 
iu the form of ointment in psora, and other af- 
fections of the skin. 
Acetis plumbi, acetate of lead, Ed. Ce- 
russa acetata, Lond. 
Take of white oxide of lead any quantity, 
put it into a cucurbit, and upon it pour 
twice its quantity in weight of distilled ace- 
tous acid ; the mixture is to stand on warm 
sand, until the acid becomes sweet: then 
pour it otf, and add a fresh quantity of acid 
as often as may be necessary, until it 
ceases to become sweet; then the whole 
liquor, freed from impurities, is to be eva- 
porated to the consistence of thin honey, 
and put aside in a cool place that crystals 
may form, which are to be dried in the 
shade. Evaporate the remaining liquor so 
as to form new crystals, and repeat this 
process, till the liquor ceases to crystal- 
lize. 
This preparation (the sugar of lead) is 
employed chiefly for injections and collyi ia. 
Aqua lithargyri acetati, water of acetated 
litharge, Ph. Lond. 
Take of litharge two pounds and four ounces ; 
distilled vinegar one gallon. Mix them 
and boil to six pounds, stirring constantly ; 
then put the liquor aside, and after the im- 
purities have subsided, strain it. 
This preparation has long been employ- 
ed under the denomination of Goulard's ex- 
tract. It is applied to the same purposes 
with the preceding. 
Oxidum zinci, oxide of zinc. 
Let a large crucible be placed in a furnace 
filled with burning coals, in such a manner 
that it shall be somewhat inclined to its 
mouth ; and when the bottom of the cru- 
cible is at a moderate red heat, throw in 
pieces of zinc, each of them about the 
weight of a drachm. The zinc shortly 
inflames, and is converted into white floc- 
culi, which from time to time are to be 
removed from the surface of the metal, 
with an iron spatula, that the combustion 
may be more effectual ; when the inflam- 
mation ceases, remove the oxide of zinc 
from the crucible. Another piece being 
thrown in, renew the operation, which 
repeat as often as may be necessary. Last- 
ly, let the oxide of zinc be prepared in the 
same manner as carbonat of lime. 
Dose as a tonic, from 2 to 5 or more 
grains. 
Sulphas zinci, sulphat of z‘nc, White 
vitriol. 
Take of zinc, cut into small pieces, three 
ounces ; sulphuric acid, five ounces ; water, 
twenty ounces. Mix them, and the con- 
sequent effervescence being over, digest 
for sometime on warm sand. Then strain 
through paper, and after due exhalation 
put the liquor aside, that chrvstals may 
form. 
1 his is often used as an injection and. 
collyrium. 
bolutio sulphatis zinci, solution of sulphat 
of zinc. 
I ake of sulphat of zinc sixteen grains, dis- 
tilled water eight ounces, diluted sulphuric 
acid sixteen drops. Dissolve the sulphat 
ot zinc in the water ; then the acid being 
added, liltre through paper. 
Aqua zinci vitriolati cum camphora, water 
of vitriolated zinc with camphor. Ph. Lond. 
Take of vitriolated zinc half an ounce, cam- 
phorated spirit half an ounce by measure, 
boiling water by measure two pounds. 
Mix them, andfiltre through paper. 
This is used as a collyrium it requires 
no further dilution. 
Solutio acetitis zinci, solution of acetite of 
zinc. 
Take of sulphat of zinc, one drachm ; dis- 
tilled water ten ounces. Dissolve it. "l ake 
then of acetite of lead, four scruples ; dis- 
tilled water, ten ounces ; dissolve this.. 
Mix the solutions; and when the iiquor 
has remained some time at rest, strain it. 
T he solution is regarded as more astrin- 
gent than the acetite of lead, and of a less 
irritating nature than the sulphat of zinc., 
Pulveres, powders. 
Pulvis aromaticus, aromatic powder. Ed., 
and Lond. 
l ake of cinnamon, smaller cardamom seeds, 
and ginger, of each equal parts. Rub 
them into a very fine powder, which is to 
be preserved in a glass phial well stopped. 
In the Ph. Lond. the proportion of cinna- 
mon is greater, and one part is added of 
long pepper. 
Pulvis asari Europrei compositus, com- 
pound powder of asarahacca, Ed. Pulv-. asari 
compos. Lond. 
Take of asarahacca leaves three parts ; the 
leaves of marjoram and lavender flowers, 
of each one part. Rub them together to a 
powder. 
A mild errhine. 
Pulvis carbonatis calcis compositus, chalk 
powder. 
Take of prepared carbonat of lime, four 
ounces; of cinnamon, a drachm and a 
half; nutmeg, half a drachm. Rub them 
together to powder. 
Pulvis crete compositus, compound pow- 
der of chalk. Ph. Lond. 
Take of prepared chalk, half a pound; cin- 
namon, four ounces ; tormentil and gum 
arabic, of each three ounces ; long pep- 
per, half an ounce. Reduce them to 
powder separately, and then mix them. 
Dose of either of the above aromatic 
astringents, from 15 grains to half a drachm. 
Pulvis e creta compositus cum opio. 
Take of compound powder of chalk, eight 
ounces; hard purified opium, rubbed to 
powder, one drachm and a half. Mix 
them. 
Dose, one scruple, or half a drachm. 
