KEY AND INDEX 



by Lockyer, 6, 73; explana- 

 tion of the continued heat of, 

 6, 206, 207, 209; estimate of 

 the heat-giving life of, 5, 208; 

 host of meteors falling into, 

 6, 209. 



Sun-dial invented and perfected 

 by Anaximander and Anax- 

 imenes, 1, 109. 



Sun-spots discovered by Galileo, 

 2, 79. 



Swan, J. W., an early experi- 

 menter with electric light, 

 6, 228; filament for an incan- 

 descent lamp invented by, 6, 



2 33- 



Sydenham, Thomas, 2, 188. 



Sylvius, founder of a medical 

 system, 2, 186. 



Symington, James, constructed 

 a boat consisting of two hulls, 

 with a paddle-wheel between 

 them worked by steam, 7, 

 67. 



Systems, medical, in the seven- 

 teenth century, 2, 185. 



Szczepanik, Mr. Jan, his work 

 in indirect color-photography, 

 8, 245- 



TACITUS, tells us that in his day 

 the Germans crouched in dens 

 dug out of the earth, 9, 133. 



Tagliacozzi, Gaspar, restores 

 amputated noses, 2, 183. 



Tait, Professor P. G., his ap- 

 paratus for creating vortex 

 rings in air, 3, 291; molecules 

 measurable in inches, 3, 301; 

 estimate of the heat-giving 

 life of the sun, 6, 208. 



Talbot, Fox, on Chaldean 

 exorcisms, 1, 71, 72; dis- 

 covered a process of photo- 

 graphing on paper, called 

 "Calotype" process, 8, 227. 



"Task System" of manufactur- 

 ing clothing. See Costumes. 



Taylor, in association with Mil- 

 ler and Symington, con- 

 structed a boat consisting of 

 two hulls, with a paddle- 

 wheel between them worked 

 by a steam-engine, 7, 67. 



Telegraph, development of, 8, 

 3; early experiments with, 

 8, 8; early experiments of 

 Morse, 8, 19; first public 

 exhibition by Morse, 8, 20; 

 used for the first time, 8, 21; 

 multiple messages, 8, 25. 



Telegraph, wireless. See Wire- 

 less telegraphy. 



Telephone, the development of 

 the, 8, 66; experiment of 

 Hauksbee, 8, 67; Robert 

 Hopke's method of communi- 

 cation by, 8,68; "magic lyre" 

 telephone invented by Sir 

 Charles Wheatstone, 8, 69; 

 Bourseul suggests an elec- 

 trical telephone, 8, 71; prac- 

 tical telephones of Prof. Alex- 

 ander Graham Bell and Elisha 

 Gray, 8, 73 ; Dr. Graham Bell 

 describes his invention, 8, 74; 

 question of priority in the in- 

 vention of the telephone, 8, 

 81; improvement upon the 

 type of receiver was made by 

 Thomas A. Edison, 8, 83; 

 microphone transmitter in- 

 vented by Emil Berliner, 8, 

 83; other transmitters in- 

 vented by Professor Hughes 

 and Francis Blake, 8, 84; 

 long-distance telephone per- 

 fected, 8, 84; solid back 

 transmitter invented by A. 

 C. White; 8, 85; telephone 

 equipment, 8, 86; practical 

 operation of the telephone, 

 8, 87; automatic telephone 

 systems, 8, 87; the calling 

 dial, 8, 88; the wireless tele- 

 phone, 8, 88; Dr. Lee De 

 Forest's connection with wire- 

 less telephony, 8, 89; instru- 

 ments used by Dr. DeForest, 

 8, 90; advantage of wire- 

 less over wire telephones, 8, 

 ox. 



Telephone equipment, 8, 85. 



Telescope, invented by Lipper- 

 shey, 2, 78, 252; constructed 

 by Galileo, 2, 78, 253 ; Kepleri- 

 an telescope, 2, 253; New- 

 ton's reflecting telescope, 2, 



[ 22o] 



