722 
THE CODEX AXD THE BRITISH PHARMAC0P(EIA. 
SOUFRE. S =: 16. 
2. Fleur de Soufre layee^'^. 
Sulfur Suhlimatian et Lotum. 
This is sublimed sulplmr, made into a paste Y'ith a small quantity of Y'ater, 
then Y’ell diluted and washed with boiling distilled water until the water ceases 
to redden litmus paper, then drained and dried ; it is a well-known article of 
English pharmacy, but not in the P. B. 
3. Soufre Precipite, 
Magistere de Soufre. 
Sulfur JPrcBcipitatum. 
Fleur de soufre . . . cent grammes, 100. Flower of sulphur, one hundred grammes. 
Chaux eteinte . . trois cent „ 300. Slaked lime . . three „ „ 
Eau commiuie . . mille „ 1000. Plain water . . one thousand „ 
Acide chlorhydrique.Q. B. Hydrochloric acid, a sufficiency. 
This will show the general arrangement of the quantities ordered for any pre¬ 
paration, and the fact of those quantities being expressed in words and figures, 
thereby diminishing the chances of error as to quantity. It will be observed that 
the amount of lime is much larger than ordered in the P. B.; the modus operandl 
is virtually the same, the directions in the Codex being a little fuller and more 
explicit. 
Carbone. C = 6. 
6. Chaebon Yegetal. 
Carlo e Ugno. 
Vegetable or wood-charcoal.—Take fragments of white wood, light and not 
resinous, any quantity, wdiich introduce into a sufficiently capacious earthen 
crucible ; fill up the spaces left between them with ordinary charcoal, in powder, 
and add sufficient of this substance to form a bed of two or three centimetres 
above the highest point of the pieces of wood, then put on the cover of the cru¬ 
cible and gradually raise the temperature to a red heat; keep up the heat until 
a small piece of the charcoal being detached from the mass, for trial, no longer 
colours sensibly a boiling solution of caustic potash, allow the crucible to cool; 
take out the fragments of carbonized wood, and free them by means of a light 
brush from the charcoal dust which covers them. Well prepared wood-charcoal, 
put into a test-tube and strongly heated, does not give off any trace of empyreu- 
matic matter. Speaking of w'ood-charcoal, the P. B. says, wood charred by ex¬ 
posure to a red heat without access of air. Vegetable charcoal has lately been 
much extolled as a remedy for faulty digestion and for gouty subjects. 
CHAPTER H. 
MINERAL ACID3. 
The following are included in this Chapter :—Purified sulphuric acid, dilute 
sulphuric acid, alcoholic sulphuric acid, nitric acid, alcoholic nitric acid, phos¬ 
phoric acid, boric or boracic acid, hydrosulphuric, hydrochloric, nitromuriatic, 
cyanhydric or prussic, carbonic, and chromic acid. 
Acide Sulfueique. SOg^IO. 
16. Acide Sulfueique Pueifie*. 
Acidum Sulfuricum Purum. SOgHO = 49. 
Purified sulphuric acid is directed to be prepared in a manner similar to that 
of the P. B. 1864, the retort should be of the capacitj^ of a litre (thirty-five 
ounces) in operating upon one thousand grammes by w^eight of sulphuric acid, 
and, should larger quantities be required, the employment of several retorts 
