342 



Q. 



Quartz 7, 8, 99, 100, 101, 102, 103, 



104, 175, 184, 186, 194, 275. 



Quaternary axis (of 1st order) 23, 81, 127. 



Quaternary axis (of 2nd order) 21, 25, 



26, 55, 260. 



Quercine ........... 264. 



Quercite 264. 



Quinary axis 23, 25. 



Quinic acid .......... 308. 



Quinicacid (phenyl-ethyl-amideof) 308. 

 Quinidine . , 219, 297, 313, 314, 315. 

 Quinine 219, 221, 226, 297, 313, 314, 315. 



Quinine-levulinate 307. 



Quinine-pyruvate 307. 



R. 



Racemates .207, 208, 209, 210, 211, 



214, 215, 216, 218, 229, 280, 294, 



298, 308. 



Racemic acid 204, 211, 219, 224, 225, 



295, 308. 



Racemisation 234, 235, 236. 286, 292. 

 Racemism (partial). . .220, 221,222. 

 Racemism (pseudo-) . . . .229 232. 

 Raecmoids. .207. 208, 209, 210, 211, 



214, 215, 217, 218, 229, 234, 298, 308. 



Radial arrangement. 168. 



Radiation (of X-ray-bulb) .151, 152. 

 Radiolaries 3, 46, 55, 46, 60, 70, 85. 



Raper (H. S.) . 299. 



Rapp (R.) 226, 



Raske (K.) ..... .257,287,289. 



Rates (of growth) 166. 



Rational cosines 80, 81, 



Rational indices . . 78, 79, 118, 119. 



Rational periods 23, 119. 



Rays (Rontgen-) 79, 100, 101, 102, 



103, 104, 112, 137, 141, 144, 145 



157, 191, 192, 195. 

 Reaction-velocity 294, 296, 297, 298, 

 302, 312, 315, 318. 

 Read (J.) 219,232,242,246,257,258. 



Reciprocal relations 97,107. 



Reflection . . . 3, 9, 12, 15, 20, 50. 



Reflections (characteristic) . . 15, 16. 



Reflections (repeated) 3, 9, 22, 26, 27, 



28, 29, 30, 31, 32. 



Regularity (geometrical) . 2, 7, 8, 70. 

 Regularity (variable and invariable) 7, 8. 

 Regulation (of velocities) .... 302. 



Reichenbach (H.) 111. 



Relations (symmetry-) 21. 



Relative symmetry 97, 98. 



Religious symbols 37. 



Repeat 114, 123, 124, 125, 126,129, 



131. 



Repetition (regular). . . . 2, 3, 5, 87. 

 Repetition (symmetrical) . 2, 3, 5, 6. 

 Resau (C.) ........ 221,222. 



Residual affinities 291. 



Retrograde mutation . . . . . . 202. 



Retrogression 202. 



Reusch (E. Von) . . . 186, 196, 278. 

 Reversibility. . . .197,198,208,228. 

 Review (of symmetry-groups) 74, 75. 



Rhodium-anticathode 151. 



Rhodiumsalts (complex) 220, 233, 250, 

 251,252,253. 



Rhombicdodecahedron. . . . 87, 88. 

 Rhombic system ... 68, 69, 83, 122. 



Ribose 299. 



Riecke (E.) 126, 138. 



Ries (A.) '. . . 198, 199. 



Riiber (C. N.) 232. 



Rimbach (E.) . . 278. 



Rinne (F.) . . . .101, 147, 182, 196. 



Rivina brasiliensis 47. 



Rivina humilis 47. 



Rocksalt 152157, 174, 200. 



Rontgen-patterns 100, 101, 102, 103, 

 104, 144, 146, 180, 191, 192, 193, 



194, 195, 196. 



Ron t gen-radiation 79, 99. 100, 101, 

 102, 103, 112, 144, 145, 146, 147, 

 148, 150, 151, 153, 159, 191, 192, 



195, 291. 



Rohn (K.) 126: 



Romburgh (P. Van). . . .272,299. 



Rome de 1'Jsle (J. B. L.) . . . 172. 



Roozeboom (Bakhuis, H. W.) 209, 



210, 221, 229. 



Roseiibohm (E.) 249. 



Rosenbusch (H.) 89. 



Rosenthal (J.) 319. 



Rosenthaler (L.) 312. 



Rotation (about axis) 8, 13, 14, 18, 19, 



20, 23, 27, 34, 89, 90,91, 106, 107, 



108, 119, 120, 127, 128. 

 Rotation-dispersion 249, 275, 276, 279. 

 Rotation (molecular) 246, 251, 275, 



276, 286. 



Rotation (optical) 110, 184, 185, 187, 

 205, 275, 282, 283, 286. 



