‘274 Principal Characters of the Earths and [Ocr. 
‘ 
Mae aie HEATED WITH FLUXEs. 
Sopa. Borax. SaLtT oF PHOSPHORUS. 
nnn aaeaamicamanimanaietalie 
Antimonious acid.... 
Antimonic acid...... 
Oxide of tellurium. ...'. P. W. colourlessglass;} P. W. clear, colour-| The same 
white on cooling less glass; white on cool- 
C. reduced ing 
C. becomes grey and 
opaque 
@xide of columbium....| Combines with effer-| Colourless, clear glass;} Fuses easily; glass, 
vescence, but not fused|/becomes opaque by Fl |permanently clear 
or reduced 
Oxide of titanium......| Fusesintoacleardark-| P. W. fuses easily ;| O. F. clear, colourless 
yellow glass; white orjglass, colourless; be-jglass 
grey-white on cooling,|comes milk-white by Fl| R. F. and on C, glass, 
and crystallizes with eyo-|_ R. F. glass assumes alyellowish, hot ; on cool- 
lution of great heat dark amethyst colour, butling, first red, then very 
C. not reducible transparent fine bluish-violet 
In large quantity on 
C. and R. F, glass, dull- 
yellow ; when cold, deep- 
blue 
Oxides of uranium ....| C. brown yellow; not} P. W. dark-yellow| P.W. and O. F. clear 
fused glass; in R, F, becomes|yellow glass; cold, straw- 
dirty-geeen yellow, slightly green 
C. and R. F. fine 
green glass 
Oxides of cerium ......| C. not fused, soda ab-| O.F. fine red, or deep} O. F. fine red glass s 
sorbed; white or grey-jorange-yellow glass; co-|colourless when cold, 
white protoxide remainslour flies on cooling ;/and quite limpid 
on the surface cold, yellowish tint. Ena- 
mel white by Fl. In 
R, F. loses its colour 
@xide of manganese. ..| P. F. fuses, green| O.F. clear, amethyst] The same, but colour 
glass, clear; cold, bluish-\colour glass ; colour flies|not so deep. In fusion 
green in R, F, in O. F. boils, and gives 
C. not reduced off gas; in R. F. fuses 
quietly 
Oxide of zinc......+..| | C. not fused, but re-| O. F. fuses easily,| Nearly the same 
duced, with flame ; whiteclear glass becomes 
fumes, which cover themilky by Fl 
charcoal 
Oxide of cadmium. ....| P. W. not fused P. W. yellowish glass,| Dissolves in large — 
C. reduced, sublimes, colour flies on cooling ;\quantity, clear glass; 
and leaves a circular yel-on C. glass bubbles, cad-jon cooling, milk white 
lowish mark mium reduced, sublimes, { 
and leaves yellow oxide 
Oxide of iron.......... C. absorbed and re-| O. F. dull red glass} Similar to borax 
duced ; not fused becomes clear and yel- ' 
lowish, or colourless by : 
coolin } 
' 
| 
C. and R. F. bottle- 
green glass, or bluish- | 
duced ; not fused or reddish glass; be-|colour flies almost wholly 
comes yellow, or nearlyjon cooling | 
green 
Oxide of cobalt........| P. W. pale-red by| Fuses readily, deep-| The same, the colour 
transmitted light ; grey,|blue glass appears violet by candle 
cold ight 
Oxide of nickel........) C. absorbed and re-| O. F. orange-yellow,| As with borax, but the | 
colourless, on cooling ) 
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