INDEX 



PACK 



Abbe's Substagc Condensers 13, 67, 120 



Acetylene Gas as Radiant 44 



Achromatic Condenser 13, 69 



Acid Fixing Bath , 30 



Adjustable Camera, Bausch & Lomb's 21 



Agate Ware Developing Trays 30 



"Agfa" Irttensifier 129 



"Agfa" Reducer 131 



A Home-made Camera 90 



An English Method of Drying Negatives 62 



An Optical Illusion 78 



Aplanatic Oculars, Spencer's 12, 52 



Atwood's Camera-Microscope 8 



Backing Plates 37 



Bacteria, Photo-micrographing 82 



Bausch & Lomb's Adjustable Camera 21 



Bausch & Lomb's Microscopes 10 



Beck's Objectives 15 



Binding Lantern Slides .116 



Blacking Interior of Microscope Body 53 



Black Paper Backing for Dry Plates 38 



Blocking Out Negatives 142 



Blue Prints 109 



Box for Fixing Bath 135 



Box for Washing Plates . 136 



Bromide of Potassium as a Restrainer . . . . . .. . . .133 



BulPs-Eye Condenser 13 



Camera, Bausch & Lomb's Adjustable 21 



Camera, Leitz' Upright 22 



(149) 



