720 



OPTIC PROJECTION 



Micro-projection, addition to the 



magic lantern 307-309 



advantages 223 



alternating current 284 



apparatus 221, 319 



centering 246 



college, bench lantern 301 



condenser for 237 



conditions for good 309 



direct current arc lamp 236 



illumination for 236, 248, 271, 284, 

 286-287, 305, 328, 335, 339, 598, 

 616-620 



house-circuit 285 



lime light 287 



objectives 224-226 



ordinary microscope 262 



outfit for photography . .382, 386 



room 235 



screen 235 



size of image 470 



size of screen 470 



size of specimens 224, 255 



summary 313 



sunlight 286 



troubles with 301 



weak lights for 287 



Microscope with amplifier. . .238, 600 

 for drawing on horizontal 



surface 344 



drawing with inclined 345 



focusing device 241 



house circuit drawing outfit . . 343 

 getting light through with 



concave mirror 347 



magic lantern lamp and con- 

 denser 336 



objectives, objects to project 



with 269 



photo-micrography 385 



plane mirror 34^ 



position for drawing 345 



projection and drawing 275 



projection with ordinary. 262, 263 



projection with vertical 267 



slide, masks for 252 



specimens, projection of 269 



tube 241 



size and image 243 



vertical with high powers. ... 283 



vertical, stray light 268 



without ocular or substage 



condenser 334 



Microsummar 225 



Microtessar 22 5~579 



Milliet de Chales 676, 679 



Mirror 574 



at end of clock-shaft (helios- 



tat) 152,153 



concave 573 



convex 575 



reflection 57 2 -573 



attached to drawing table ... 324 



concave, as reflector 127 



concave, without substage 



condenser 349 



45 degree with vertical objec- 

 tive 46, 267 



to illuminate opaque object . . 1 75 

 light through microscope with 



concave 347 



with plane 346 



on drawing table 324 



parallel to clock-shaft (helios- 



tat) 154 



position at equator, for helio- 



stat I5 8 



position at poles for a helicstat 1 58 

 position and time of day with 



the heliostat 144 



screen 459 



silvered on face with dim light 331 



to get erect image 190, 361 



to reflect image to drawing 



surface 3 22 > 337 



Mirroroide 459 



Misframe 434 



Mixed jet 105, 107 



Models, drawing for 357 



Moler, Geo. S 218, 219 



Molyneux 677 



Motion of picture film 419 



Motion Picture Screen Co 459 



Motor-generator set 489 



Mounting, condenser 17, 62 



lantern slides 216 



low power objectives 241 



Movement of lamp at its limit . . 47 

 intermittent with camera- 

 graph 4 1 ? 



Moving pictures, 



390, 409, 435, 468, 570, 591, ooo 



apparatus for 39 



apparatus, getting in correct 



position 4 12 



development of the art ... 391 , 680 

 and education 394 



