A HISTORY OF SCIENCE 



which solidified the ocean 

 beds is subterranean heat, iii. 

 120; the destruction of our 

 land inevitable, iii. 122; marks 

 of marine animals in solid 

 parts of the earth, iii. 124; 

 the elevation of the land above 

 the water was caused by the 

 expansion of heated matter, 

 iii. 128; finds no vestige of a 

 beginning no prospect of an 

 end, iii. 129; his theories 

 hostile to sacred history, iii. 

 130; his theories accepted, 

 iii. 140; his theory concerning 

 the vapor of water, iii. 178. 



Huxley, Thomas Henry, reviews 

 the work of Professor Marsh, 

 iii. 112; accepts Darwin's 

 theory, iv. 174; his estimate of 

 Darwin's accomplishments, iv. 

 178. 



Huygens, Christian, ii. 218; im- 

 provement of the telescope, ii. 

 218, 219; his lawsof motion, ii. 

 222; " pneumatical experi- 

 ments," ii. 222; a resident of 

 France, ii. 224; his micrometer, 

 ii. 254; application of coiled 

 balance-spring to watches, ii. 

 256; originator of the gen- 

 eral doctrine of undulation 

 as the explanation of light, iii. 

 224; gave the first hint of the 

 existence of ether, iii. 284. 



Hydrochloric acid liquefied, v. 

 40. 



Hydrogen, liquefied by Professor 

 Dewar, v. 43 ; approach to the 

 absolute zero made by, v. 69. 



Hydrophobia, Pasteur's inocula- 

 tions to prevent, iv. 240; slow 

 in manifesting itself, v. 182. 



Hygiene, investigations in, at the 

 Berlin Institute, v. 196. 



Hypnotism, phenomena of, iv. 

 269. 



IATROCHEMICAL school of medi- 

 cine, ii. 186. 



latrophysical school of medicine, 

 ii. 187. 



Imhotep, the demi-god, consider- 

 ed to be the creator of medical 

 knowledge, i. 49. 



Imperial Academy of Sciences at 

 St. Petersburg, ii. 202. 



Induction, electric, discovered 

 by Hauksbee, ii. 259-262. 



Inductive versus deductive rea- 

 soning, v. 235-238. 



Inorganic matter, possibilities of, 

 v. 224. 



Insane, reforms in caring for, iv. 



245- 

 "Isomerism," word coined by 



Berzelius, iv. 62. 

 Italic leaders of thought, Xe- 



nophanes, Parmenides, and 



Empedocles, i. 114. 



JACKSON, DR. CHARLES T., claim- 

 ed the disco very of ether, iv. 215. 



Jansen, Zacharias, inventor of 

 the microscope, ii. 77. 



Jena, the "dream city," v. 

 145; the streets of , v. 146; the 

 market-place of, v. 147; its 

 world-renowned university, v. 

 148. 



Jenner, his discovery of inocula- 

 tion for preventing small-pox, 

 iv. 190; his famous paper on 

 vaccination, iv. 194; his first 

 inoculation, iv. 196; recep- 

 tion of the discovery in Europe, 

 iv. 197. 



Jet-stone, supposed to possess a 

 magical property that would 

 cure epilepsy, hysteria, and 

 gout, i. 277. 



Joule, James Prescott, the work 

 of, iii. 256; his theory of the 

 conservation of energy, iii. 257 ; 

 his paper of 1843, iii. 269; his 

 theories on the calorific effect 

 of magneto-electricity and the 

 mechanical value of heat, iii. 

 270. 



Julian calendar, it follows the 

 Alexandrian theory, giving us 

 the familiar leap year, i. 36. 



Jupiter, its moons discovered by 

 Galileo, ii. 79. 



286 



