328 



. 22, 25, 79, 127, 140. 



. . . . 276, 278, 279. 



Sc.|u< tut- (of operations) .... 16. 



ibonaccian) . . 157, 160. 



and /.-) 147. 



teiei . >l operations) . . 33, 49, 50. 



Series (of reflections) .... 26 30. 



(of binary axes) .... 37, 38. 



Shibata (Y.) 205. 



Shifting (parallel) .... 13, 14, 27. 



Siegbahn (M.) 146. 



Sign (change of) 272, 273. 



Silica-structures 67. 



Silicium-atom (asymmetric) . . . 233. 



Silver 140. 



Silver-acetate 227. 



Silver-carbonate 274. 



Silver-iodide . ; 58. 



Silver-oxide 274, 275, 276. 



Simon (L.) 221, 289. 



Simplicity (of indices) 77. 



Simulative symmetry 172, 173, 174, 



176, 178. 

 Simultaneous motion (of planes) 



26-30. 

 Sixfold symmetry 22, 25, 79, 127, 140. 



Skita (A.) 272. 



Slimmer (M.) 291, 292. 



Snow-crystals 167, 168. 



Sodium 149, 150, 151. 



Sodium-ammonium-racemate 198, 201, 

 202, 207, 266. 



Sodium-ammonium-tartrate . . . 207, 



208, 281. 



Sodium-bromate . 179, 181, 264, 265. 

 Sodium-#-camphor-nitronate 214, 273. 

 Sodium-chlorate 107, 132, 179, 181, 189, 



208, 257, 264, 265, 266, 267. 

 Sodium-chloride. . 147, 149, 150, 151. 



Sodium-hydrophosphate 264. 



Sodium-hydroxide .... 226, 293. 



Sodium-nitrate 266. 



Sodium-periodate 34, 179. 



Sodium-racemate 202. 



Sodium-tartrate 202, 207. 



Sodium-tripotassium-chromate . . 192. 

 Sodium-tripotassium-sulphate. . .192. 

 Sodium-uranyl-acetate 264. 



Snhncke (L.) 109, 118, 123,126, 127, 

 128, 129, 130, 134, 141, 153, 181. 



Solenoid <J4, 103, 104, 105. 



Sollas (W. J.) . . . . i; 



Solubility (of antipodes) 203, 204, 214, 

 215, 242, 280, 281. 



Solution-bodies 87. 



Solution-phenomena 87. 



Solvents (active) ... 281, 282, 297. 



Solvents (influence of). . . 278, 279. 



Sommerfeld (A.) 143. 



Soret (Ch.) 97, 208. 



Space-lattices (definition) . 113, 114. 



Space-lattices (properties) 113, 114, 115, 

 116, 117, 118, 148. 



Space-lattices (significance of) 113, 118, 

 149, 150, 151, 152, 156, 158, 160, 164. 



Space-lattices (symmetry) 115, 116, 118, 

 148, 183, 194. 



Species 195. 



Specific action (of enzymes) 216 220, 



290. 



Specific symmetry . . 91, 285, 286. 



Spectra of (R on t gen-radiation) 147, 

 148, 151, 152. 



Speed (of reaction) 106, 217, 218, 219, 



220, 221, 226, 275, 276, 280, 282, 283, 

 287, 288, 293299. 



Spencer (H.) 286. 



Sphere (of influence) ... 136, 137. 



Sphere (of projection) .... 82, 83. 



Spherical symmetry . . . 72, 87, 229. 



Spicula (of radiolaries) ... 68, 83. 



Spiral (Archimedian) . . 158, 164. 



Spiral (genetic) . . 156, 157, 159, 160. 



Spiral (logarithmic) . . 161, 162, 165. 



Spiral structure 155, 156, 157161, 164. 



Spiral theory (of phyllo taxis) 155, 156. 



Spitta (A.) 219. 



Spontaneous fission 199, 201, 202, 203, 

 205, 208, 209, 210, 266. 



Spring (V.) 87. 



Spyridibotrys trinacria 59. 



Stability (mechanical) 55, 196, 197, 271, 

 277, 283, 284, 299. 



Stadtlander (K.) 185. 



Stadel (W.) 201. 



Standard-forms 6, 7. 



