334 



Herz (W.) 235. 



Herzog (R. O.) ...... 227, 312. 



Hess (K.) . .- 299. 



Hessel (J. F. C.) ..... 75, 199. 



Heterogeneous systems . . .132, 133. 



Heteropolar axes 36, 37, 39, 41, 70, 

 91, 92, 99, 105, 108. 



Heulandite 182. 



Hexacoralla . . . 61, 63. 



Hexagonal system 83, 121, 142, 143, 144. 



Hexagonal trapezohedron . . . . 40. 



Hexahydrobenzylamine-carboxylic 

 acids . . . 226. 



Hexahydro-phtalic acids . 226, 261. 



Hexahydro-isophtalic acids . . .261. 



Hexahydro-terephtalic acids . . .261. 



Hexahydroxy-hexahydro-benzenes 261 . 

 262, 263, 264, 265. 



Hexoctahedron 86, 87, 88. 



Hexoses 302. 



Hextetrahedron .... 86, 87, 88, 



Heymans (G.) 7. 



Hickmans (E. M.) ... 221, 222. 



Hilgendorff (G.) 267. 



Hill (A. Croft) . 228. 



Hintze (C.) . . . 231. 



Hirst (C. T.) . . . 226. 



Hoff (J. H. Van 't) 157, 204, 206, 

 207, 208, 209, 211, 234, 235, 237, 

 238, 240, 241, 242, 243, 244, 245, 

 253, 262, 264, 269, 277, 282, 283, 

 291, 296. 



Hofmeister (W.) 166. 



Holleman (A. F.) . , 234, 291, 294. 



Holmberg (B.) 289. 



Holohedral forms 74, 82, 175, 230, 272, 



273. 



Holohedrism 82, 84, 91, 121, 125, 230. 



Homogeneity 114, 125, 126. 



Homogeneous fields of force . 96, 97. 



Homogeneous structures . . . .114. 



Homologous points 18, 114. 



Homopolar axes 39, 41, 45, 70, 90, 91. 



Honda (K.) 106, 



Hull (A. W.) 157. 



Humphries (H. B. P.) .... 292. 



Huyghens (Chr.) 148. 



Hydrazine-derivatives 218. 



5-Hydrindene-/-^-diol 286. 



2nzws-Hydrindene-/-,2-diol .... 286. 



Hydrobromic acid 292. 



Hydrocarbons 202. 



Hydrochloric acid . . .267,292,310. 



Hydrocyanic acid 297, 298, 311, 314. 



Hydrocharis 61. 



Hydrolysis 234. 



Hydrophyllum virginianum .... 36. 

 Hydroxy-acids 234, 259, 287, 289, 290, 



291. 

 a-Hydroxy-butyric acid (isobutyl- 



ether of) ., \ . . 289. 



Hydroxy-compounds 259. 



Hydroxy-hydrindamine 219. 



norm.K Hydroxy-isobutylbutyrate. 289. 

 Hydroxylgroup . . .138,287,289,290. 

 Hyoscyamine 225, 235. 



I. 



Icosahedron (symmetry of) . 43, 46. 

 Icositetrahedron (pentagonal) . 86, 87. 



Ideal forms 7, 8. 



Identity 11, 81. 



Idocrase 184. 



Imaginary crystalfroms . . 54, 55, 68. 



Imaginary fruits 37, 41. 



Imago (of physical phenomenon) 93, 94. 

 95, 99, 105. 



Imhof (A.) 231. 



Immobility (of organs) . . . 56, 57. 

 Inactive molecules .... 254 267. 

 Inactivity (optical) 233, 234, 255, 256. 



280, 312. 



Indene-oxide 286. 



Independent action (of mirror- 

 planes) 31. 



Indices (Miller's) . 79, 86, 87, 141. 

 Indices (rational). .78, 79, 118, 120. 

 Induction (asymmetrical) 236, 268 ,302, 



308. 

 Infinite figures 1 7, 1 8, 1 9, 22, 29, 1 1 2, 1 1 3. 



Inflorescence 167, 201. 



Influence (guiding) 236, 291, 302, 303. 

 Influence (sphereof) ... 139, 140. 

 Inhomogeneous patterns . 132, 133. 

 Inoculation (of solutions) 212, 213, 216. 



Inorganic salts 280. 



Inosites 261, 262, 263, 264. 



Instability (of antipodes) . . . .311. 



Integer numbers . . . . . . 79, 118. 



Intensities (of spectra) 152, 154, 155, 156. 



Interatomic dimensions 145. 



Intercalations . . 187199, 230232. 

 Interference-maxima 146, 149, 150, 154, 



155, 156. 



