INDEX 



Abbott, Professor C. G., uses the Anopheles, mosquitoes of this 



bolometer and other instru- genus transmit malaria, 249. 



ments to determine the solar Anti-bodies, their development and 



constant, 108. use in fighting diseases, 211; 



Aeroplane, time it would require their presence demonstrated by 



to explore the solar system, 30; the action of the white blood 



invented by the Wright Bros., corpuscles, 214. 



297; record flights, 300; prac- Antidotes to the bacterial poisons 



tical uses, 303 ; as an instrument as supplied by nature, 211 ; the 



of war, 304. prodigal supply of, 212. 



Agglutinins, their development, Antitoxins, their development and 



211. use, 211. 



Airship, stabilized by gyroscopes, Anti-typhoid vaccine, developed by 



274. Sir Almroth Wright, 209; its 



Alchemy, the new, 122. use made obligatory in the U. S. 



Algol, a famous variable star, Army, 251. 



shown by Vogel to be a spec- Arrhenius, Svante, his theory of 

 troscopic binary, 96 ; its interest- 

 ing changes visible to the naked 

 eye, 99. 



Alpha Centauri, our nearest star 

 neighbor, 42; is 26,000,000,000,- 

 000,000 miles distant, 46; if it 

 had planetary attendants they 



would be invisible, 91; is a bi- Atom, exploring the, Chapter IV, 



nary star, 93. 101 



Alpha ray, consists of atoms of A fc h d m 



helium carrying a double charge ^ size ^ number ^ 



the origin of nebulae, 21; his 

 ion theory, 102; estimates the 

 size of a particle that will be 

 driven before the light waves, 

 112 ; explains the tails of comets, 

 the sun's corona, and the aurora 

 borealis, 112. 



of positive electricity, 113 ; 



shows transformation of one 



element into another, 114; how 



it affects the blood, 238. 

 Anaemia, pernicious, treated with 



Thorium X, 236. 

 Anaphylaxis, explained by side- Au /^__, bo / eahs j^_ e ^ la ^!i :<: ^ 



chain theory, 228. 

 Andromeda, the large nebula in, 7. 

 Animal tissues, grown outside the 



mined, 117; the number in a 

 cubic centimeter, 119 ; photo- 

 graphed by Sir J. J. Thomson, 

 120; their structure, according 

 to the electron theory, 130. 



Arrhenius as due to electrified 

 particles driven from the sun, 

 112. 



body by Drs. "Harrison, Carrel, Automobile, statistics as to its de- 

 and Burrows, 165. velopment, 285. 



22 329 



