Bismuth.........-..-. 
Oxide of bismuth.... 
-Oxides of tin.......... 
Oxide of lead ......... 
Oxide of copper. ...... 
MM enoury.).\. 6.3 sce'eu o's 
Oxide of silver ........ 
Metallic Oxides before the Blowpipe. 
HEATED WITH FLUXES. 
P. W. effervesces, tu- 
mified, infusible mass 
C. readily reduced 
P. W. clear glass be- 
comes yellowish and 
opaque on cooling 
C. instantly reduced 
P.W. fine green glass, 
hot ; on cooling, colour- 
less and opaque ~ _ 
C. absorbed and re- 
duced 
Borax. 
O. F. colourless glass 
R. F. partly reduced, 
muddy greyish glass 
Fuses with great diffi- 
culty ; permanently clear 
glass 
P. W. clear glass, 
lyellow, hot; on cooling, 
colourless 
C. flows over the sur- 
face and reduces 
O. F. fine green glass, 
which in R. F. becomes 
colourless, hot ; but cin- 
nabar-red and opaque 
when solid 
O. F. glass becomes 
milky, or opaline, on 
cooling 
R. F. greyish 
SALT OF PHOSPHORUS 
O. F. yellowish-brown 
glass, hot; colourless, 
\but not quite clear, cold 
R. F. clear and co- 
lourless glass, _hots 
opaque and greyish- 
black, cold 
As with borax 
Clear colourless glass 
| ©. F. similar to bo- 
rax; R. F. glass usually 
red, opaque, and like an 
enamel 
O. F. yellowish glass 
viewed by transmitted 
light by day, by candle- 
light reddish 
R. F, greyish 
LOCI S AS Snes Sag SeIge 
Rhodium. .......... =e 
*Palladium.....i....00 
Assay. WITH OTHER REAGENTS. Remarks. 
PTieicg! 22 f¢ SFO eh The alkalies are not readily dis- 
tinguishable by the blowpipe. Lithia 
leaves a dull yellow stain, when 
heated to redness on platina foil. 
Ammonia may be known by heating 
the assay with soda: it gives off a 
pungent vapour, which turns the yel- 
low colour of moistened turmeric 
paper brown 
fo SEEDER SOD ACD N. C.; a globule of different 
Hydrate, . 602 osces 
Carbonate... 2.00006 
PrOntiin 22). sees: 
LTT ey 
Carbonate .......0.4. 
Beeeeres, 20h OS uNRICa 
Carbonate .......... 
*Glucina ...........,.:.|-/N.C.3 black or dark grey mass 
A Pe 
Zircona 
5 
cooling 
N. C, exhibit a bla 
shades of red; colour flies on 
ck, or grey- 
ish-black colour ; do not fuse 
‘N.C. black or dark-grey mass, 
infusible 
N. C.; flesh colour 
cold 
N,C.; fine blue glass, with strong 
heat when cold 
when quite 
The blue colour is only distinctly 
seen by day-light 
4 a2 
