INDEX 



Geocentric theory, i. 217. 



Geometry, according to Herodo- 

 tus, was invented in Egypt, i. 

 107. 



Gerlach, the histological scheme 

 of, iv. 281. 



Germanium discovered, iv. 68. 



Gilbert, William, study of mag- 

 netism, ii. in; the earth a 

 magnet, ii. 113; "dipping" of 

 the needle, ii. 114; other dis- 

 coveries, ii. 1 1 6. 



Gill, Dr. David, at the Cape 

 observatory made the first 

 photograph of a comet, iii. 

 67. 



Glaciers, the phenomena of, iii. 

 147; the moraines, iii. 148; the 

 perched bowlders, ibid.; the 

 polished and striated rocks, 

 the lapiaz, iii. 149; the ancient 

 moraines, iii. 150; perched 

 bowlders in the Alpine valley, 

 iii. 152; Agassiz's Etudes sur 

 les Glaciers, iii. 154: treated 

 with contempt by most scien- 

 tists, ibid.; a mile deep over 

 New England, iii. 163; the 

 results following the rending 

 of the ice sheet, iii. 164. 



Gladstone, Professor J. H., iy. 

 68. 



Glands, discovery of, in the 

 mucous membrane, iv. 129. 



Glycerine discovered by Karl 

 Wilhelm Scheele, iv. 27. 



Goethe, Johann Wolfgang, 

 studies of the metamorphosis 

 of plants, iv. 140-145; ex- 

 tends the doctrine to the 

 animal kingdom, iv. 146. 



Golgi, Dr. Camille, process of 

 staining nerve cells, iv. 282. 



Gordon, Andrew, his electric 

 motor and bell, ii. 279. 



Gralath, Daniel, groups Ley den 

 jars in a "battery," ii. 283. 



Gravitation, law of, discovered 

 by Isaac Newton, ii. 236; New- 

 tonian laws apply to every 

 particle of matter in the 

 universe, iii. 58; power of, 



v. 214; hope of establishing a 

 relation between, and elec- 

 tricity or magnetism, v. 215; 

 so-called law of, v. 231. 



Gray, Asa, became an ardent 

 propagandist, iv. 175. 



Gray, Stephen, experiments with 

 electric conduction and in- 

 sulation, ii. 262. 



Guerin, Alphonse, endeavors to 

 protect wounds from germs, 

 iv. 230. 



Gulf Stream, the, theories of 

 Humboldt and Maury con- 

 cerning it, iii. 196; it carries 

 an enormous quantity of heat, 

 iii. 197; its effect on the 

 climate of the seaboard of the 

 United States and Europe, iii. 

 198. 



Gun-shot wounds, effect on sur- 

 gery, ii. 41. 



Guy of Chauliac, surgeon, ii. 38. 



HAECKEL, ERNST HEINRICH, 

 and the Darwinian theory, iv. 

 175; and the disputed ques- 

 tion of "spontaneous varia- 

 tions," iv. 178; and the new 

 zoology, v. 144-177; his many 

 paintings, v. 152; discoveries 

 of numerous species of radio- 

 larians, v. 154; gastrula theory 

 of, v. 155; his theory of 

 embryological development, 

 v. 156; great champion of 

 Darwinism, ibid.; his work 

 on morphology, v. 157; liberty 

 of spirit accorded at Jena, v. 

 158; his laboratory at Jena, 

 v. 159; his method of work, v. 

 161; his methods of teaching, 

 v. 163; recognized leader in 

 the new zoology, v. 171; his 

 genealogical tree regarding the 

 ancestry of man, v. 172 ; man's 

 line of descent clearly traced 

 by, v. 176. 



Hahnemann, Christian Samuel 

 Friedrich, the system of, iv. 

 188. 



Hales, Stephen, father of vege- 



283 



