INDEX. 



773 



Grassmann, Hermann, geometry, i. 44 ; 

 geometrical labours of, neglected in 

 Germany, 243, 247 ; ' Ausdehnungs- 

 lehre,' 275 ; mathematical labours 

 of, ii. 73 ; 630 ; Hankel on his science 

 of forms, 640 et seq.; his comprehen- 

 sive calculus, 655 ; gradual apprecia- 

 tion of his work, 656 ; 710. 



Graunt, John, statistics, i. 122 ; "Tables 

 of Mortality, "ii. 564. 



Graves, R. P., 'Life of Sir W. R. 

 Hamilton ' quoted, i. 106, 289 ; ii. 

 722. 



Gravitation, formula of, i. 319 ; lines of 

 thought emanating from it, 321 ; not 

 an ultimate property of matter, 338 ; 

 difficulty of measuring directly, 353. 



Gray (the poet), i. 285. 



Gray quoted on David Robertson, i. 

 289. 



Gray, Asa, criticism of 'Vestiges,' ii. 

 319 ; 332. 



Greard, educationalist, i. 260. 



Green, George, important generalisation 

 in statics and dynamics, i. 230 ; his 

 "potential function," 231 ; 246, 272, 

 331 ; important papers lost, 277 ; 

 properties of ether, ii. 31, 33 ; in- 

 spired by Cauchy, 43 ; analytical 

 method of, 45 ; referred to, 54 ; theory 

 of electric and magnetic phenomena, 

 74 ; 698. 



Gregoire proposed Bureau des Longi- 

 tudes, i. 113. 



Gregory, David, introduced Newtonian 

 philosophy into the University of 

 Edinburgh, i. 232 ; Professor of Astro- 

 nomy, Oxford, 270, 272 ; astronomical 

 instruments, 322. 



Gregory, F., Hankel on, ii. 712. 



Gren's 'Journal der Physik,' i. 41. 



Grew, Nehemiah, used the term " cell," 

 i. 195 ; microscopic investigations in 

 biology, 283 ; embryological re- 

 searches, ii. 227 ; microscopical 

 studies, 260 ; observations of, 261. 



Griesbach, "Animal and Plant Geo- 

 graphy," ii. 226. 



Griesinger, Mayer's "right of priority," 

 ii. 115. 



Grimaldi, polarisation of light, ii. 18. 



Grimm, Jacob, 'Ueber Schule, Univer- 

 sitat, Akademie,' i. 100 ; language, ii. 

 540, 542. 



Groth, ' Physikalische Krystallographie,' 

 i. 443. 



Groups, theory of, ii. 632, 686, 687; 

 Burkhardt on, 688; 689 et seq.; 

 continuous and discontinuous, 691. 



Grove, " Correlation of Physical Forces," 



ii. Ill; "force," 125, 130. 

 Gruber, Ersch and, Encyclopaedia of, 



i. 35 ; representative of encyclopaedic 



teaching, 38. 

 Guardia quoted, i. 106 ; ' Histoire de 



la Medicine,' 126. 

 Guerry, A. M., statistics, ii. 579. 

 Guhrauer, 'Leibniz, eine Biographic,' 



i. 158, ii. 280. 



Guizot, education, law of, i. 183, 257. 

 Guldberg, law of mass-action, ii. 157 ; 



ideas of Berthollet, 177. 

 Guyton de Morveau, i. 116, 131 ; gun- 

 powder, iron, steel, 148. 

 Gyroscope and gyrostat invented, ii. 61. 



Haacke, ii. 271. 



Hacker, Dr VaL, 'Praxis und Theorie 

 der Zellen- und Befruchtungslehre, ' ii. 

 265, 370 ; 371, 447. 



Haeckel, Ernst, i. 179 ; ' Generelle 

 Morphologic der Organischen Wesen,' 

 ii. 213, 214, 270, 271, 349 ; Goethe's 

 ideas, 244, 246; "Ontogenesis" and 

 "Phylogenesis," 307; 'Natiirliche 

 Schopfungs - Geschichte,' 313, 323; 

 'History of Creation,' 332; genea- 

 logical trees, 337 ; sexual selection, 

 343 ; 347 ; evolution, 348, 455 ; Dar- 

 win and Lamarck, 350 ; 351, 361 ; 

 conception of universal animation, 

 369 ; biological theories of, 371 ; 414 ; 

 school of Darwinism in Germany, 

 436; "germinal" element, 457 ; and 

 Weismann, 460 ; and Herder's evolu- 

 tionism, 533 ; man and brute, 541 ; 

 546, 608 ; kinetic hypothesis, 611. 



Haeser, 'Geschichte der Medicin,' i. 

 126, 308, ii. 388, 390, 401; on 

 homoeopathy, i. 210 ; on Kant, 219. 



Hahn, "Cuvier" in 'Grande Encyclo- 

 pedic,' i. 130. 



Hahnemann's homoeopathy L 210. 



Hales, improvements in microscopy, ii. 

 230. 



Hall, Marshall, ii. 519. 



Halle, University of, i. 165. 



Haller, Albrecht von, i. 163 ; of Gottin- 

 geu University, 165 ; connection of, 

 with modern science, 175 ; ' Gb'ttinger 

 Gelehrte Anzeigen,' 176 ; ' Ele- 

 menta,' 193 ; 194 ; zoological labours 

 of, ii. 220, 230; study of separate 

 organs, 233; "evolutionist," 278; 

 279 ; epigenesis, 298 ; 299, 308 ; vital- 

 istic conceptions, 384 ; discovery of ir- 

 ritability, 429 ; psycho-physical view, 

 471 ; influences Herder, 532 ; 533. 



