330 



Star-fishes 3, 60. 



Stark (J.) 142, 194. 



Statistic investigations. 103, 107, 108. 



Steinmetz (H.) 192. 



Stephanophyllia complicate!, . . . . 61. 

 Stephanophyllia elegans ... 61, 64. 

 Stereochemistry 200, 214, 228, 233, 



235, 236. 



Stereometrical arrangement (of atoms) 

 229, 244, 245. 



Stereoscope 4. 



Sterohedron 131. 



Stewart (A. W.) 266. 



Stilbite 176. 



Stirrer . . 40. 



Stoehr (C.) 247 



Stokes (G. G.) 96, 97. 



Striation 173, 185, 186. 



String-galvanometer 106. 



Strong (W. M.) . 286. 



Strontium -dithionate 179. 



'Strontium-nitrate 179, 181. 



Strontium-hydro tartrate 35. 



Structure (of crystals) . . .77, 123. 



Structures (regular) 123. 



Struvite 58. 



Strychnine .... 213, 214, 237, 284. 

 Strychnine-racemate . . . 215, 216. 



Strychnine-selenate 181. 



Strychnine-sulphate . . 179, 181, 189. 



Strychnine-tartrates 215. 



Sub-groups 72, 80, 89, 90,96, 97, 103,104. 

 Submicroscopical lamellae . 181 192. 

 Substitution (and crystal-form) 135,136. 

 Successive reflections . '. . . 26 31. 



Sugars 217, 220, 287. 



Sulphides (crystal-forms of) . . .141. 



Sulphur-dioxide 146. 



Sulphur-atom (asymmetric) . . . 233. 



Sun-flower 156, 161, 163. 



Superposition (of physical causes) 93, 



102, 103, 104, 105, 106, 107, 108. 



Supersaturated solutions 206, 207, 208, 



209, 210. 



Surface-density . v 115. 



Swarts (F.) 237., 



Swietenia mahagoni 60. 



Sylvine . 148, 149, 169. 



Symbols (fylfot-) 36. 



Symbols (of groups) 36, 69. 



Symmetry . . . . 1, 2, 6, 10, 11, 33. 

 Symmetry (aesthetic action) 2, 3, 4, 5. 

 Symmetry (apparent) 119, 120, 171, 172, 



182, 183. 



Symmetry (axis) 3, 8, 13, 14, 19, 21, 



22, 26, 33, 34, 41, 42, 72, 87, 88, 89, 



103, 110, 116, 123, 124, 125. 



Symmetry (centre) 71, 100, 101, 115. 



Symmetry (character) .... 11, 17. 



Symmetry (crystallonomical) 134, 135. 



Symmetry (definition) . 10, 11, 14. 



Symmetry (doctrine of) 2. 



Symmetry-elements ... 19, 21, 25. 



Symmetry (maximum) 96. 



Symmetry (mimetic) 120, 166, 180, 193. 



Symmetry (minimum) 97. 



Symmetry (molecular) 229 234, 238, 

 241, 244256. 



Symmetry (of natural forms) . 6, 7. 

 Symmetry (of patterns) 97, 98, 99, 100, 



101. 



Symmetry (physical) 86, 87, 9499. 

 Symmetry-plane (diagonal) 56, 63, 65, 



66,70,71. 



Symmetry-plane (horizontal) 4, 5, 56, 

 63, 65, 70, 71. 



Symmetry-plane (vertical) 4, 5, 56, 63, 

 65, 70, 71. 



Symmetry -principle 1. 



Symmetry-properties 10, 11, 19, 20, 21, 

 48, 80, 82. 



Synoecum turgens 61. 



Synthesis (artificial) 283, 285, 286, 287, 



299. 



Synthesis (asymmetric) 285, 286, 287, 

 289, 295, 299. 



Synthesis (natural) 283, 285, 286, 287, 

 289, 295, 299. 



System (cubic) 81, 84, 119, 138, 139. 

 System (crystal) . . .72, 80, 81, 82. 

 System (regular) . . .113, 126128. 

 Systems (congruent) 7, 8, 9, 16, 18, 20, 



30. 



Systems (infinite) 16, 17, 18, 110, 126, 



127, 128, 154. 



Systems (limited) 16, 18, 27, 109, 110. 



