LIST OF ILLUSTRATIONS cont. 



FIG. PAGE 



79 Compass, Transparent ... 220 



80 Compass, Prismatic ... 221 



8 1 Compass, Prismatic ... 222 



82 Compass, Prismatic ... 222 



83 Compass, Surveying ... 223 



84 Compass, Needle 223 



85 Compass, Standard ... 224 



86 Compass, Overhead ... 225 



87 Compass, Standard, Light 



Card 225 



88 Compass, Liquid Form ... 225 



89 Compasses, Drawing ... 226 



90 Compass, Beam ... ... 226 



91 Compressor ... ... 227 



92 Condenser, Achromatic ... 227 



93 Cross Staff 227 



94 Cross Staff 227 



95 Currentmeters ... ... 228 



1427. Currentmeter, Tidal 

 Log. 



1494. Currentmeter. 



1495. Amsler Currentmeter, 

 Pattern III. 



1496. Ditto, Pattern I. 



1498. Ditto, Pattern IV. 



1499. Ditto, Pattern VI. 



96 Dichroiscope ... ... 229 



97 Dip Needle... ... ... 229 



98 Deflector ... 229 



99 Deflector, Kelvin Pattern 230 



100 Dip Needle, Kelvin Pattern 



(Vertical Force Instru*- 



ment) 231 



101 Dial Sight 232 



102 Director 233 



103 Divider, Hair 233 



104 Eectrometer, Dolezalek ... 234 



105 Dotting Pen 234 



1 06 Electrometer, Laby String 235 



107 Electrometer (Wilson 



Kaye's Tilted Gold Leaf) 235 



1 08 Endless Tangent Screw on 



Sextant ... ... ... 236 



109 Extensometer ... ... 237 



no Episcope ... ... ... 237 



in Eyeglasses, Folding Pattern 238 



112 Forceps for Microscope ... 239 



113 Forceps, 3-prong ... ... 239 



114 Finder, Maltwood's ... 239 



115 Finder, Telescope 239 



116 Field Glass, Prism ... 240 



117 Field Glass, Gali lean ... 240 



118 Fuller Calculating Slide- 



Rule 241 



FIG. PAGE 



119 Fog Horn 241 



120 Geometric Pen 242 



121 Growing Cell for Micro- 



scopes ... ... ... 242 



122 Growing Cell for Micro- 



scopes ... ... ... 242 



123 Goniometer, Dr. Hutchin- 



son's ... ... ... 243 



124 Goniometer for Microscope 243 



125 Grating, Diffraction ... 244 



126 Grating, talon 244 



127 Galvanometer, Ayrton- 



Mather 245 



128 Galvanometer, Telescope 



and Scale ... ... 246 



129 Galvanometer, Thompson 246 



130 Galvanometer, Broca ... 247 



131 Galvanometer, Paschen ... 248 



132 Galvanometer, Einthoven 



String ... ... ... 2j9 



133 Grating, Echelon 250 



13412 Gauges, Vacuum and 



andb Pressure 251 



135 Indicator, Richards's ... 251 



136 Indicator, High Speed ... 251 



137 Heliograph 252 



138 Heliostat 252 



139 Hygrometer, with Humid- 



ity Tables 253 



140 Hygrometer, Admiralty 



Pattern 253 



141 Iris Diaphragm ... ... 254 



142 Sorby's Parabolic Illumi- 



nator ... ... ... 254 



143 Illuminator, Vertical ... 254 



144 Illuminator Prism ... 254 



145 Integrator ... ... 254 



146 Michelson's Interferometer 255 



147 Keratometer ... ... 255 



148 Lamp, Lighthouse ... 256 



149 Lamp, Signalling ... ... 256 



150 Lantern, Enlarging ... 257 



151 Lantern, Optical ... ... 257 



152 Lens, Photographic ... 258 



153 Lens, Photographic, Cooke's 258 



154 Lens, Telephoto ... ... 258 



155 Lens, TeJephoto ... ... 258 



156 Lamp Lens... ... ... 259 



157 Linen Prover ... ... 259 



158 Live Trap 259 



159 Live Box ... ... ... 259 



160 Lieberkuhn 259 



161 Lummer-Gehrcke Plate ... 259 



162 Laryngoscope 260 



