Coloring Daguerreotype, . . . . . 18

CHAPTER II.

Coloring Back Grounds--Transparent ditto--Gilding Dissolvent--
Solution for removing Specks--Solarized Impression--To Purify Water--
Cleaning Mercury--Adhesive Paper--Black Stain for Apparatus--
Sealing Wax for Bottles--Rouge--Rotten Stone--Potassa Solution--
Hyposulphite Solution--Substitute for do.--Gilding Solution--
Solution for increasing the Brilliancy of the Daguerreotype--
Bleaching Solution;--Cold Gilding--Neutralizing Agents--
Buff Dryer--Keeping Buffs in order--Cleaning Buckskins--
Reflector for taking Views, . . . .52

CHAPTER III.

Bromine and its Compounds--Iodine and its Compounds--
Chlorine and its Compounds--Cyanide of Potassium--
Hyposulphite of Soda--Hyphosulphite of Gold--Nitric Acid--
Nitro-Muriatic Acid--Hydrochloric Acid--Hydrofluoric Acid--
Sulphuric Acid--Accelerating Substances--Liquid Sensitives--
Dry Sensitives, etc., etc., . . . . .72

CHAPTER IV.

Light--Optics--Solar Spectrum--Decomposition of Light--Light, Heat,
and Actinism--Blue Paper and Color for the Walls of the Operating Room--
Proportions of Light, Heat and Actinism composing a Sunbeam--
Refraction--Reflection--Lenses--Copying Spherical Aberration--
Chromatic Aberration, . . . 131