INDEX 



"shower of brickbats," iii. 44; 

 thought they must consist of 

 disconnected particles, iii. 45; 

 advanced the idea that light 

 waves were really electro- 

 magnetic waves, iii. 247; be- 

 lieved that electricity and 

 magnetism were various condi- 

 tions of stress and motion in 

 the ethereal medium, iii. 280; 

 all interstellar space filled with 

 ether, iii. 283; his study of the 

 kinetic theory of gases, iii. 

 295; his investigation of the 

 subject of molecular dynamics, 

 iii. 297; his calculations of the 

 distance traversed by mole- 

 cules between collisions in 

 ordinary air, iii. 298. 



Clock, pendulum, invented by 

 Huygens, ii. 219; marine, in- 

 vented by Harrison, ii. 257. 



Cohesion, "force" of, v. 49. 



Colding, a Danish scientist, and 

 the transformation of heat, iii. 

 257. 



Columbus, Christopher, effect of 

 his discovery, ii. 50. 



Columbus, sixteenth - century 

 anatomist, ii. 166. 



Comets, strangers to our plane- 

 tary system, iii. 38; their 

 movements not controlled by 

 the general law, iii. 39; eccen- 

 tric orbits, iii. 51; their spec- 

 tacular tails, iii. 52, 53; Encke 

 and Biela's discovery of, iii. 

 54; twenty are controlled by 

 Jupiter and Saturn, ibid.; 

 Biela's broken into fragments, 

 iii. 55; Professor Newcombe's 

 estimates of, iii. 56; minor 

 nebulae drawn into our sys- 

 tem, iii. 70. 



Communism as advocated by 

 Pythagoras.i. 127. 



Computations, as to the age of 

 the earth's crust, v. 210; of the 

 earth's ultimate fate, v. 212. 



Conservation of energy, the, iii. 

 253-282. 



Constantinople, effect of its 



capture by the Turks upon 

 contemporary learning, ii. 42. 



Cope, Professor, traced the an- 

 cestry of the camel, iii. 113. 



Copernicus, Nicholas, famous 

 astronomer, ii. 54; his system, 

 ii. 56; introduction to his 

 book, ii. 57; "On the Order of 

 the Spheres," ii. 60; argument 

 from parallax urged against 

 him, ii. 63; advocates of his 

 theory, ibid. 



Corti, Bon a venture, observed 

 motion of the cell contents, iv. 

 124. 



Corvisart, Jean Nicolas de, phy- 

 sician to the First Consul, iv. 

 199; lays the foundation of 

 physical diagnosis, iv. 200. 



Cow-pox, iv. 194, 195; persons 

 afflicted with, secure from 

 small-pox, iv. 196. 



Crookes, Sir William, experi- 

 ments with the cathode rays, 

 iii. 249; and radio-active sub- 

 stances, v. 103; his spinthari- 

 scope, v. 104. 



Croll, Dr., computes that the 

 Gulf Stream conveys to the 

 North Atlantic one-fourth the 

 heat which it receives from 

 the sun, iii. 197; it is produced 

 by the actual trade -winds, 

 iii. 198; the effect on the 

 climate of Europe should its 

 course be deflected, ibid. 



Crotonian School of Philosophy, 

 founded by Pythagoras, i. 112. 



Ctesibius, his studies of the 

 problems of matter, i. 243. 



Curie, Madame Skaldowska, dis- 

 covery of radium, v. 100; the 

 theories of radio-activity of, 

 v. 106. 



Curie, Professor Pierre, discovery 

 of radium, v. 100; the theories 

 of radio-activity of, v. 106. 



Cuvier, George, his investigations 

 concerning extinct species, iii. 

 78; his inquiries respecting the 

 fabulous animals of the an- 

 cients, iii. 81; agrees with 



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