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INDEX.

Colours it gives to glass 441,620, 626Substances which tinge dissolved iron

black-345

General properties of the black

matter- 347*^3-4-8

Colour does not succeed unless theiron is dissolved in acids 349Substance which tinges dissolved iron

blue-348

Means of obtaining a saturated lolution

of this substance-484

Method of gilding iron with amalgam

of gold-81

with lolution of gold-108

Juan bianco -443

ivory stained black-435

purple-—-97

K

Kelhw -324,325

Its staining quality destroyed by sire 327Greatest part of it volatile in the dreg 26

How made into pencils-328

Genuine pencils distinguished fromcounterfeit-328

Leaf gold, the process of making it — 43

Jts sizes-<0

Calculation of its thinness-39

Green gold leaf-50

Party leaf---3 t

Methods of fixing it on other bodies 62Linen embellished with flowers of it- 22b

Leather, stained black-- — 363

purple-97

Light, blackness produced by its absorption

-317

by its strong reflection-318

Lightening, wood preserved from, by acoating of tar and lamp black— 364

L.

lute -223-

Solution of it in spirit for varni(hes224,-— 624

Lacet, gold, method of cleaning when sul-lied -39

Separation of the gold from them byfusion.-163

Lamp, improved —-28

Lamp surnete -* —-28

Lampblack; method of preparing — 341

A finer fort-342,639

From pitcoal-342

Differences from other kindsof foot 341Difference from charcoal as a pigment-357,376

Lead, melted with different proportions of

platina-512

Changed blue, purple, &c. — 516, 3,7

Agreement with bismuth-515

Cupelled with platina-361

Melted with emery-608

Lead, black, where found-325

its uses-2, 326, 328

Difference in goodness-». 326

Linen, embellished with gold leaf — 226Stained black by vegetable juices 329,

- 330; 3;?1

Dyed black-429, 433

Marked of durable colour by floes—332

Stained of bust'colours-433

red-434

purple-97, 4Z4

Logwood, its use in the black dye — 406

in writing ink-— — —382

Produces blue and black with verdegris

-— --407

Colour of its decoction improved bykeeping—- — 411

M.

Madder, produces a black dye on blue-

cloth-—420

Produces a black dye on yellow iron-

stain-— — 433

Produces a purple on dilute iron stain

— 3-1-433

A boiling heat injurious for the red andpurple, useful for the black 421, 434.

Manganese, colours it imparts to glass 174,-441.

Increases the fusibility of glass — e.42

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