INDEX. 



5<>3 



HUMAN 



Human anatomy, Vesalius on, 65 



Humboidt, 423 ; on isothermal lines, 424 ; 

 his ' Cosmos,' 423 ; on meteors, 307 ; pays 

 expenses of Agassiz's work, 447 



Hunter, John, his birth and history, 197; 

 on comparative anatomy, 198 ; his mu- 

 seum, 199 



Button on geology, 218 ; on granite veins, 

 221 ; on size and weight of Schehallion, 

 289 



Huyghens, 134; history of, 174 ; invents 

 cycloidal pendulum and describes 

 Saturn's ring, 175 ; his undulatory 

 theory of light explained, 175 ; on re- 

 fraction of light, 177 ; on double refrac- 

 tion, 179 



Huxley on fossil bird-reptile, 462; on rapid 

 multiplication of plants, 467 ; cited, 475 



Hydrogen discovered by Cavendish, 229 ; 

 name given by Lavoisier, 238 ; amount 

 of, in water, 400 ; size of molecules of, 

 364 ; liquefaction and solidification of, 407 



ICE, heat lost in melting, 241 ; melted by 

 friction, 352 ; rocks scratched and 



blocks carried by, 449 

 Iceland spar, double refraction in, 179 

 Igneous rocks, Hutton on, 220 

 Imperial Academy of Germany founded, 



124 



Index of refraction, 107 

 Ind ans, early science of, 4 

 Indium discovered, 338 

 Induction-coil, 377 

 Inquisition banishes Vesalins, 66; burns 



G. Bruno, 81 ; forces Galileo to recant, 



91 

 Insects, Ray's work on, 141 : microscopic 



anatomy of, 136 ; fertilisation of plants 



by, 415, 467, 472 

 Interference of light, 319 ; colours caused 



by, 320 



Invertebrate animals, Lamarck on, 428 

 Ionian school of learning, 8 

 Iron tools of lake-dwellings, 454 

 Islands, formation of, n 

 Isothermal lines, Humboidt on, 424 

 Italy, early scientific societies in, 124 



AMES, Sir H., on weight of the earth, 



289 

 fiMisen makes a telescope, 85 



,nssen on photosphere of the sun, 342 

 Jews, medical knowledge of the, 40 

 Joule, Dr., experiments on the mechanical 



equivalent of heat, 355 ; cited, 363 



!uno discovered, 300 

 upiter, atmosphere of, 344 ; his moons, 

 88 ; veloc ty of light measured by, 172 ; 

 an J Saturn, long inequality of, 279 



LIBRATION 



Jura mountains, erratics of the, 450 

 Jussieu's natural system of plants, 209, 

 412 



TRENT'S Hole, flint implements found 



^ in, 453 



Kepler, life of, 93 ; on structure of eye, 

 94 ; his telescope, 95 ; his first law, 

 95 ; second law, 97 ; third law, 98 ; his 

 delight at Galileo's discoveries, 98 ; pre- 

 dicted transits of Mercury and Venus 

 154 ; finished Rudolphine tables, 99 



Kerner on fertilisation of plants, 472 



Kircher invents magic lantern, 74 



Kirchhoff on dark lines in solar spectrum, 

 338 : his spectroscope, 339 



Kite, Franklin's, 256 



Koran forbade dissection, 40 



T ACTEALS discovered by Asellius, 



-* 112 



Lagrange, 276; on libration of the moon, 



277 ; on stability of planetary orbits, 280 

 Lake-dwellings of Switzerland, 453 

 Lamarck, 426 ; on invertebrates, 428 ; on 



development of animals, 429; weak 



point in his theory, 430 

 Lamont on variations of magnetic needle, 



380 



Land, conversion of, into sea, 10 

 Laplace, 277; on long inequality of Jupiter 



and Saturn, 280 ; on moon's acceleration, 



280 



Lassell on Neptune's moon, 304 

 Latent heat, Black on, 240; theory of, 



applied by Watt, 243 ; explained, 353 

 Latitude, first parallel of, laid down, 27 

 Laughing-gas, Davy's experiments with, 



39 1 



Lavoisier the founder of modern chemistry, 

 234 ; his experiments, 236 ; his death, 

 238 



Law of compressibility of gases, 126 ; of 

 definite proportions in chemistry, 399; 

 of multiple volumes, 405 ; of gravitation, 

 148 ; of refraction discovered by Snellius, 

 104 



Laws of Kepler, 95 et seq. 

 Leaves of plants, Bonnet on use of, 200 

 Leeuwenhoeck on animalcules, 136 

 Leibnitz on differential calculus, 145 

 Leidy, Dr., on fossil animals, 476 

 Lenses, Alhagen on use of, 48 ; Porta on, 



74 ; Galileo on, 86 ; Kepler on, 94 

 Lescarbault's supposed planet, 312 

 Leslie, Sir J., on refraction of heat, 359 

 Lever, Archimedes on the, 22 

 Leverrier calculates the position of Nep- 

 tune, 302 ; on November meteors, 309 ' 

 his analysis of planetary orbits, 312 

 Leyden, medical school of, 190 

 Libration of the moon, 277 



