1822.] Pulvis Antimonialis of the London Pharmacopaia. 271 
cacy which does not equally belong to oxide of antimony mixed 
with any other inert substance, his process is unquestionably a 
good one. It is, however, worthy of the consideration of medical 
men, whether tartarized antimony in small doses may not be - 
advantageously substituted for every other antimonial prepara- 
tion. It possesses the great advantages of being ‘actly pro 
cured of certain and uniform power. 
ArTICLE IX, 
An Account of the Principal Characters of the Earths and 
Metallic Oxides before the Blowpipe.* 
[I am not aware that the characters of the earths and metallic 
oxides before the blowpipe have any where been so minutely 
and accurately given as by Mr. Children in his translation of 
Berzelius on the Use of the Blowpipe, &c. On this account, I 
have now copied them from that work, without any other altera- 
tion than that of divesting them of their synoptical form.— Ed.] 
2,* ABBREVIATIONS.—O. F. Ovidating Flame. 
ERE 
Parts of the Assay and Flux. N.C. Nitrate of Cobalt. 
of either of the Fluxes means that the Supportis Charcoal. P.¥F. Platina Foil. P.W. Pla- 
tina Wire. A Brace § refers to the Substances in the first Column only, and includes all those 
which are contained in the Space it comprehends. 
R. F. Reducing Flame. = parts; equal 
Fl. Flaming. C. under the Column 
HEATED ALONE ON 
’ ASSAY. 
PLATINA. CHaRcoaL. 
Alkalies .......55.04..| 
Baryta...............| Infusible Infusible 
Hydrate. .0 ves < 
Carbonate ..sseecee- 
Bubbles up and fuses 
Fuses readily into a clear glass; 
enamel-white on cooling 
Is absorbed. 
Becomes caustic, and is absorbed 
Strontita.............| Infusible Infusible 
Hydrate. ..... «e-e| Like baryta 
Carbonate ......+...| Fuses with moderate heat at the 
surface, great brilliancy; _ tinges 
strong R. F. red ; becomes alkaline 
BREET pcies aisire ain «»| No change 
Carbonate .......+..| Becomes caustic and alkaline; 
emits brilliant white light 
Magnesia. ........ +.--| No change No change 
Alumina..,.,......+..) No change No change 
Glucina .......+...+.-| No change No change 
SEM aba 'nsie «a 'edab ees. No change No change 
* From Mr. Children’s Translation of ‘‘ The Use of the Blowpipe in Chemical Analysis, and 
in the Examination of Minerals; by J. J. Berzelius,” 
