index.
Distillation, apparatus for — —-9
of aquafortis in iron pots-136
of aquafortis from metallic solutions, in
stone ware vessels-153
of acid spirits in glass retorts-6x3
of æther —-143
DyedClotbs, method of comparing samplesof----- —406
Dying, apparatus for experiments in — 10
Dying black, on woollen-401
on silk — —— —-422
en hats-— — —-428
on linen and thread-429
Differences in woollen, silk and linen,in regard to their receiving this dye
-- — 426, 427, 429
Essential differences of the d ; ing liquor
from writing ink-401, 407
Necessity of a blue ground, 01 of log-wood, for woollen — — 404, 407Means of discovering whether the cloth
has been blued---404
Whether maddering useful-405
Improvement of the dye by verdegris
-411. 429
Effect of the verdegris on the other in-gredients — --407
Whether cloth weakened by this dye 402The dye made to take uniformly — 409
Substitutes to galls — —-416
Black dye from combination of colours--4-a
Process of colouring it with gold ■— 621
Enamelling furnace —- \z
Gold plates for enamelling-620
Ether, fee Æther
Expansion, does not always proceed uni-formly by equal augmentations of
heat--256, 260
Some fluids expand in congealing 257
water, in freezing -257
gypsum diluted with water, in setting
— --,-259
cast iron in becoming solid --262
Extenstbility os metals, comparative, howinfluenced by their gravities-61
F.
Feathers stained purple - ■ - 97
Fire common , not reflected from elliptic fur-naces into a focus-26
Not animated by the elastic steam of
water-’■-21
Concentrated by streams of air-26
A furnace for this concentration of fire 27Its differences from solar heat in pro-ducing colours — —-350
in the burning of black bodies 318
Fijbet, method of gilding on them — 64
Flame concentrated into a kind of focus 19,--—-26
F,
Earths, separately unfusiblc, brought intofusion when mixed-245, 6t8
EleSirictty, colours impressed by it on glass,from metallic bodies — -- —- 175
Emery, Spanish, probably platina-607
Common, its effects on lead- 6 o 3
Enamel, basis for — — — — — 442Tinged black by concentration of other
colours-- --441
by combination of colours — 442Black imitated on dial plates of watches,
Scc. - 370
History of tinging it purple or red 1 70Preparations of gold for colouring it 176
Flatting-mill for gold wire — — — ~S 7
Flint melted by a burning-glass —- —463
Frankfort black-— — — 376
a vegetable coal — —*-377
Freezing expands watery fluids— —- 238Contracts oily ones — — — — 258
Fuel', coaked sea coal, its advantages—246its inconveniences-569
Furnaces, description of a set of portable
ones for experiments-1, 613
For open sire- 7
For a sand pot- 8
For a still- 9
For enamelling-— — 12
For cupellation —-— 12
P p p p For