h operation. Fixing the picture. 61
First operation. Cleaning the plate 61
Fluoric acid. 69
Fourth operation-Bringing out the picture. 71
Funnels. 53

Galvanic Battery. 57
Solution for use of 58
Gilding stand. 53
the picture. 74
Gold. Chloride of 36
To make solution of 75
Hyposulphite; or Salt of 74
Preparation of. 36
Gurney's Sensitive. 67

Head Rests. 57
Hints and Suggestions. 39
History of Photography. 3
Hungarian Liquid. 69
Hygrometers. 55
Hyposulphite of Gold. 74
of Soda. 28

Instantaneous pictures by means of Galvanism. 77
Introduction. i
Iodine, Dry 64
Chloride of 66
Bromide of 67
Box. 51
Iodide of silver. 32
Ioduret of silver. 33
Iodize the Plate. To 64
Iodized Paper for Calotypes. To prepare 98
To prepare for the Camera ib.

Lamps, Spirit 53
Light. Theory on 14
Motion of 16
Reflection of 17
Refraction of 20
on bodies. Effects of 25
Prismatic analysis of 22
Lime, Bromide of 68
Lunar Pictures. 127

Mead's Accelerator. 68
Mercury Bath 50

Nitrate of Silver. 89

Oxide of Silver. 29
On coloring Daguerreotypes 129
On the probability of Producing colored Photographs. 123

Paper. blotting; or bibulous, 88
Daguerreotypes. 81
preparation of 89
suitable for Photographs. 87
Photogenic drawing on ib
Photographic principle, the 22
Photographic process on paper. 92
drawing. Application of 95
To fix the 93
deviations. 126
Photographometer, The 135
Plate Support. 59
Blocks. 50
Vice. 51
Poppy, The Red 37
Porcelain dishes. 59
Positive Calotype 104
Preface. v
Preparation of Iodized Paper. 98
of Gold. 36
Prismatic Spectrum. 22
Analysis of Light. ib

Reflection of Light. 17
Refraction of Light. 20
Roach's Tripple Compound of Bromine. 67

Sand Clock. 70
Sealing paper. To make 77
Second operation. 94
Sensitive. ib
Silver. Bromide of 35
Chloride of 31
Iodide of 32
Ioduret of 33
Nitrate of 89
Oxide of 28
Solution of Chloride of 59
Sixth operation. 74
Soda Hyposulphite of 72
Solar and Stellar Light. 21
Still for purifying water, 54
Submitting the Plate to the action of Light 69
Synopsis of Mr. H