INDEX 



729 



Sunlight, for spectra 628 



troubles with 162 



Support for magic lantern 80 



Sun, apparent positions 163 



intrinsic brilliancy 138, 613 



with projection microscope. . 286 

 temperature 547 



Sunlight, apparatus for 138 



condenser for 161 



for micro-projection 286 



for spectra 628 



Switch for opening and closing 



the electric circuit 514-518 



closed and open 515 



double pole 12, 70 



double pole double throw 



knife switch 297 



enclosed 517 



end of knife switch next sup- 

 ply 516-517 



for all the wires of a circuit .. 514 



installation of 515 



knife switch 515 



lamp or table switch 



12, 15,71,238,263.288 



open and closed 515 



position of 516-517 



snap switch 515 



table or lamp switch 



12, 15,71,238 



Table for drawing with attached 



mirror 323-324 



for projection 287 



for projection with drawing 



shelf 325 



stain for 289 



stand for moving picture 



machine 401 



switch for opening and clos- 

 ing electric circuit 



12, 15,71,238 



Talbot, F. A 391, 439 



Temperature, absolute 547 



of crater, of arc lamp 546 



of sun 547 



Tent of cloth for drawing 350 



for drawing 1 66 



Terminals, carbon 12, 539 



Tests of polarity 506-51 1 



Theory of flicker 426 



Thompson, A. T. & Co 



80, 180, 191, 286, 303, 334, 687 

 Silvanus P . History of arc lamp 686 



Thorium discs 101 



Three-lens condenser. . . .61, 587-592 

 Three-wire automatic lamp . . 238, 263 



Thumb screws and nuts 296 



Tin for rheostat 530 



Tinted glass in combined projec- 

 tion 177 



Tint for projection room 440 



Toepler's method of striae . . . 647-650 



"Schlieren-Methode" 647 



Tracing pictures 374 



Track 290 



fixing to baseboard 290 



for optical bench 290 



Transformer 533-535 



with arc lamp 534 



wiring 532 



Translucent screen. . . .453, 461-462 

 Transparency and opaque pro- 

 jection 168-170 



Troubles in the various chapters: 



I, 46-59; II, 74-75; HI, 96; 

 IV, 114-116; V, i33-!34; 

 VI, 162-163; VII, 195-197; 

 VIII, 219; IX, 301-309; X, 

 384-388; XI, 436-437: XII, 



471 



alternating current 74 



direct current magic lantern 46 

 drawing and photography . . . 384 



house circuit 96 



lime light 114 



making lantern slides 219 



micro-projection 301 



moving pictures 436 



opaque projections 195 



rooms and screens 471 



sunlight 162 



weak lights, oil, gas, acety- 

 lene 133 



Trutat 202, 621 



Tube of miscroscope 241 



Tubing, metallic 108 



for optical bench 290 



Tungsten lamp for spectra 628 



Twilight vision 121, 175, 444 



use with weak lights 121 



Two-lens condenser 62, 587-591 



Tyndall 621 



Uchatius, moving picture projec- 

 tion (1853) 680,683 



Ultra-violet, anthracene screen 



for 627, 635, 642 



