322 



Le Chatelier (H.) 185. 



Lehmann (O.) . . . . . . 168, 169. 



Leonardo Pisano 157. 



Leonardo da Vinci . . . 157, 158. 



Leptocyathus elegans . . . . . . . 62. 



Leptopenus discus 62. 



Leucite . . 179, 185, 186, 187, 189. 



Leucyl-glycine 220. 



Levi-Malvano (M.) . . . 215, 216. 



Levulose 208. 



Lewis (J. V.) 252. 



Lewkowitsch (J.) 225. 



Lichtenstadt (L.) 233. 



Liebermann (C.) 255. 



Liebig (J. Von) . . 285. 



Liebisch' (Th.) . . . 102, 223, 263. 



Life-phenomena. . . . 197, 284, 287. 



Light-absorption (of antipodes) . 205. 



Limit-forms 119. 



Limits (of axial periods) 75, 78, 79, 80. 



Limit- value 157, 164. 



Limonene 281, 282, 283. 



Linden (T. Van der) 205. 



Lines (of force). . . 94, 95, 105, 106. 



Lines (of X-ray-spectra) 147. 



Lipase 219, 220, 295. 



Liquids (anisotropous) ... 168, 169. 



Literature (on symmetrical arrange- 

 ment) 73, 74. 



Literature (on morphological applica- 

 tions) 68, 69. 



Livens (G. H.) 272. 



Living nature (symmetry in) 68, 69, 

 195, 196, 197, 285. 



Loevenhart (A. S.) 220. 



Logarithmic spirals . . 161, 162, 165. 



Lorentz (H. A.) 95, 181. 



Loven (J. M.) 213. 



Lupeon 259. 



Luteo-cobalti-salts. . . 107, 189, 190. 



Lutz (O.) 275. 



Luzula campestris 46. 



Luzzatto (R.) 285. 



M. 



MacCutcheon 225. 



Mach (E.) 4, 5. 



MacKenzie (A.) 219, 221, 274, 278, 

 283, 290, 293. 



Madelung (A.) 185. 



Magnesium (crystal-form of) 140, 141. 



Magnesium-sulphate. . 257, 265, 266. 



Magnetic field (symmetry of) 94, 95, 106. 



Magnetic induction 102. 



Magnetic polarisation ....... 107. 



Magnetism (terrestrial) 303. 



Malic acid 213,. 224, 273, 274, 276, 292. 



Mallard (E.) 141, 166, 170, 176, 177, 

 178, 181, 182, 183, 184, 185, 186, 187, 

 189, 191, 193, 194, 257, 264, 266. 



Malonic acids (substituted). 303, 304. 



Maltase 220. 



Maltose 220, 221. 



Mandelic acid 221, 281, 282, 290, 293, 

 294, 298, 301. 



Mandelic acid (menthyl-amide of) 293. 



Mannino (A.) 215, 216. 



Manno-heptonic acid 287. 



Mannose 287. 



Maquenne (L.) 250. 



Marckwald (W.) 211, 213, 221, 224, 

 227, 255, 280, 283, 290, 292, 293, 298. 



Marsh (J. E.) 254, 264. 



Martens (M. T.) 196. 



Mastixea arborea 46. 



Mathematical treatment (of symmetry- 

 elements) 20, 28, 31, 56, 63, 65, 70, 

 71, 73, 76, 78, 116, 117, 123, 124, 

 125, 130, 131, 145, 146, 150, 151. 



Matter (crystalline) 44, 53, 54, 55, 75, 

 77, 110, 143, 149153, 155, 193. 



Matteuci (Ch.) 103. 



Mayer (P.) 218. 



Measurements (independent) . . . 81 . 



Medium (physical) 92, 96, 97, 102, 105, 

 133, 134, 141, 142, 153. 



Medusae 3. 



Meier (A.) 220, 295. 



Meisenheimer (J.) 233. 



Members (of a cycle) 155. 



Membranes (vibrating) 3. 



Mendel (Gr.) 108. 



Menozzi (A.) 218. 



Menschutkin (N.) 293. 



/-Menthol .... 221, 282, 290, 291. 



