MATTER INDEX 



29 



Occurrence, 3, 5, 22, 47, 50, 64, 65, 91, 



111, 119, 134, 195, 233. 

 Occurrence in plants, 32. 

 Occurrence in spring-water, 57, 60. 

 Opening up Zircon, 180. 

 Organic compounds, action of chloride 



on, 135. 

 Orthophosphate, 123. 

 Oxalates, 230. 

 Oxide, 120. 131. 



Oxide, action of heat on amorphous, 116. 

 Oxide, action of hydrochloric acid on, 



184. 

 Oxide, action of magnesium on, 194. 

 Oxide, action of phosphorus penta- 



chloride on, 211. 

 Oxide, action of silicon chloride on, 118. 

 Oxide, behavior of, at high tempera- 

 tures, 203, 207. 

 Oxide, crystalline form of, 77. 

 Oxide, diamagnetic, 137. 

 Oxide, illuminating power of, 222. 

 Oxide, preparation in electric furnace, 



205. 

 Oxide, propagation of heat b3% 124. 

 Oxide, properties of, 235. 

 Oxide, reduction by magnesium, 187. 

 Oxide, solubility in microcosmic salt 



bead, 186. 

 Oxychlorides, 183. 

 Oxyhalides, 236. 



Pencils, Zirconia. 191. 



Peroxide, 153, 183. 



Peroxide, separation by hydrogen, 156. 



Phosphate, 159. 



Phosphate, double potassium, 161. 



Phosphate, double sodium, 169. 



Phosphorescence, 52. 



Platinate, 128. 



Precipitation, 45, 156. 



Preparation, 21, 24, 36, 47-49. 72, 88, 



108, 149, 178. 

 Preparation from ores, 188. 

 Preparation in electric furnace, 204. 

 Preparation of nitrate, 179. 

 Presence in plants, 32. 

 Production in United States, 182. 

 Pyroracemate, 44. 



Qualitative analysis, 238. 

 Qualitative test, 62. 



Reaction, microcheniical, 145. 

 Reduction of dioxide, 7. 



Salts, 49, 106. 



Salts, double potassium, 20. 



Salts, double sodium, 87. 



Salts, properties of, 25, 53, 58. 



Salts, soluble basic, 126. 



Selenates, 163. 



Selenites, 54, 127. 



Separation by sulphur dioxide, 209. 



Separation, electrolytic, 114. 

 Separation from earths, 90. 

 Separation from gallium. 146. 

 Separation from iron, 20, 21, 46, 56, 210, 



243, 247. 

 Separation from niobic acid, 115. 

 Separation from silicon, 210. 

 Separation from thorium, copper, etc., 



164, 231. 

 Separation from titanium, 26, 74, 80. 



94, 153. 

 Separation from uranium, 243. 

 Silica, isomorphism with, 75. 

 Silicates. 174. 

 Silicofluoride, 33. 

 Silicon, comparison with. 129. 

 Similarity to titanium, 19, 20, 68, 109. 

 Source, 218. 

 Specific heat, 123, 139. 

 Spectroscopic detection, 241. 

 Spectrum, 101, 104, 105, 107, 114, 125, 



138, 151. 

 Spectrum, phosphorescent, 142. 

 Sulpharsenate, 28. 

 Sulphate, 117, 123. 

 Sulphate, double potassium, 67. 

 Sulphide, 61. 

 Sulphites, 212. 

 Sulphomolybdate, 29. 

 Sulphotungstate, 27. 

 Sulphur dioxide, separation by, 209. 

 Sulphuric acid, behavior towards, 163. 



Tannate, 224. 



Tantalic acid, separation from, 115. 



Technology, 130. 



Tellurate, 40. 



Tellurite, 41. 



Tetrabromide, 245. 



Tetrachloride, 244. 



Tetraiodide, 227. 



Thorium nitrate, determination in, 238. 



Thorium silicate, not isomorphous, 171. 



Titanic acid, isomorphism with, 109. 



Trimethylaniline, behavior towards, 132. 



Tungstates, 220. 



Uranium, separation from, 243. 

 Uses as mordant, 315. 



Valerianate, 38. 



Vanadinate. 34. 



Vapor density, 69, 73. 



Volatilization in electric furnace, 203. 



Welsbach burners, 172, 208. 



Zirconates, alkaline, 196, 221. 

 Zirconates, alkaline earth, 197, 221. 

 Zirconia, two earths in, 81. 

 Zirconium ethyliodide, attempt to pre- 

 pare, 170. 

 Zirconvl salts. IfiP. 



