178 
INDEX. 
Exposure, Proper and improper ... 
Exposure for bromide prints 
Ferrous oxalate developer . 
Filters for monochromatic light 
Filters, “ Gilvus” and “ Absolutus” 
“ Finders" . 
F'ine adjustments . 
Fixatives for sections. 
Fixing solution. 
“ Fixing” substances to cover glass 
” Flooding ” the lens. 
Foa’s fluid . 
Foci, Chemical and visual . 
Focus-glass, Zeiss Aplanat. 
Focus, Rough . 
Focus, Fine . 
Focussing arrangf ments . 
Focussing the condenser . 
Fuchsin carbolic . 
Gas burner for dark room . 
Gas-burner. Welsbach 
Gas light printing . 
Gelatino-chloride slides 
Gelatino-bromide lantern slides ... 
Glass, for objectives. 
Glass, Coloured... . 
Glass for oil lamps . 
Glazing bromide prints . 
11 Glazing” prints . 
Glossy surface prints. 
“Glycin” developer lor slides 
Ground-glass in camera . 
“ Gravura,” gas-light printing 
Haematoxyl n, Acid . 
Haematein stain. 
“ Halation” . 
Hearson’s paraffin stove 
Heliostat . 
Herschel paralleliser. 
” Holoscopics” of Watson 
Holoscopics of Walson 
Hooke’s joint for camera 
Homogeneous immersion objectives 
Horseshce base... 
Huyghen’s oculars . 
Hydrogen or coal gas. 
Hyposulphite of soda, fixing bath .. 
Ilford plates, isochroniatic . 
Illuminating system . 
Illumination, Even 
Image, The negative, on development 
Immersion condensers 
Incandescent electric lamps... 
Incubators or stoves. 
Initial power of a lens. 
Insects . 
Instantaneous work . 
Intensification of negative ... 
Intensifier, “ Kodak” . 
Iris diaphragm in condenser 
Klein’s fluid . 
“ Kodak,” bromide paper . 
Lantern slides. 
Lanttrn slides, developers. 
Lantern slides and negatives 
Lantern slide varnish. 
Large negatives, Apparatus for 
Leitz semi apochromatics . 
Length of camera-stretch ... 
Leprous tissue, staining . 
Lieberkiihn reflector. 
Light for developing room. 
Light filter ... . 
Light filters, Sanger-Shepherd 
PAGE 
Light, To centre the.86 
Light for bromide printing ... ... 139 
Lights for enlarging.149 
Lighting, Even, for large objects .. ... 51 
Lightly stained objects .105 
Lighting, Even.90 
Limbs of stands compared. 17 
Lime-light, The.79 
Lime-light jets.79 
Limes 80 
Lime-jet, Supports for . 83 
Loeffler’s methyl blue stain ... ... ... 172 
Lumiere’s plates . 98 
Magnesium ribbon for printing .136 
Magnification and aperture. 59 
Magnification, To obtain ... ... ... 65 
Magnification, To find the ..93 
Malt wood ” finder" ... ... ... ... 22 
Masks and strip for lantern slides ... 157 
” Maximum decolorisation ” 160 
Mechanical stages ... ... ... .. 22 
Mercur* intensifier .128 
Meihylene blue stain. ... 172 
Metol for lantern slides 154 
Micro cope and its parts, The ... ... 16 
Microscopical technique .159 
Microtomes . 167 
Minot microtome . ... ... 167 
Mirror, Use of, as condenser ... ... 69 
Mixing jets . ... 80 
Monochromatic light.95 
Mounting lantern slides .157 
Moving objects. ... ... 46 
Muller’s fluid . ... 162 
Negative, The perfect... ... ... ... 126 
Nelson, E. M., on colour-correct plates ... 56 
Nelson on condensers... ... ... ... 72 
Nelson’s paralleliser. ... 83 
Nerve-stains .171 
“ Nikko ” paper for bromide printing ... 139 
“ Numerical aperture" defined ... ... 60 
Objectives and opaque centre stops ... m 
Objectives . .. .. ... 53 
Objectives, Classified. 55 
Objectives, water and oil immersion ... 61 
Objectives used as condensers .. ... 71 
Objects, Poorly stained ... .104 
Objects pellucid .104 
Objects dense. ... ... 106 
Ocular, Huyghenian. 63 
Oculars for focussing 41 
Oil lamps.78 
Oil lamp, The wick . 87 
Orthochromatic plates . 14 
Orthochromatising plates .100 
Optical tube, The . 27 
Oxyhydrogen light . 79 
Oxygen, Brin's.80 
Paraffin process, Advantages of the ... 163 
Paraffin wax, melting points .166 
Paraffin sections, mounting. 168 
Paraffin lamps. 78 
Paralleliser, The . 83 
Paralleliser, Use of the .. . 88 
Pellucid objects.. ... 104 
“ Penetration” defined . 58 
Photography, Utility of . 9 
Photo-micrography, Definition of ... 9 
Photo-micro apparatus ... ... ... 31 
Photo-mechanical printing, Negatives for 130 
Piffard Dr., observations on objectives .. 55 
“ Planars,” by Zeiss, for large work ... 51 
Plane glass for focus ... 92 
Plasma-methylene blue . ... 172 
