INDEX. 



305 



Spectra, metallic, wave lengths of, 



conditions for accuracy of meas- 

 urement, "289. 



effect of change of temperature 

 of source of light on constancy 

 of position of metallic lines, 

 294. 



objects of the present investiga- 

 tion, 291. 



results, 295. 



table, 296. 

 Spectrum, solar, photography of the 

 least refrangible portion of 

 the, 301. 

 Stevia Pringlei, 276. 

 Stewart, Balfour, death of, 315. 



notice of, 375. 

 Studer, Bernhard, death of, 305. 



notice of, 377. 

 /3 Sulpho-S-brompyromucate, 



argentic, 209. 



baric, 207. 



acid baric, 208. 



calcic, 208. 



plumbic, 209. 



potassic, 210. 

 /3-Sulpho-S-brompyromucic acid, 206. 



action of bromine, 210. 



of nitric acid, 214. 

 Sulphofumarate, argentic, 212. 



baric, 213. 

 8-Sulphopyromucamide, 193. 

 /3-Sulphopyromucate, baric, 215. 



acid baric, 216. 



calcic, 217. 



potassic, 217. 

 S-Sulphopvromucate, argentic, 191. 



baric,*" 189. 



acid baric, 190. 



calcic, 191. 



plumbic, 191. 



potassic, 192. 



acid potassic, 192. 



sodic, 192. 



acid sodic, 193. 

 /3-Sulphopyromucic acid, 214. 



action of bromine, 218. 

 S-Sulphopyromucic acid, 188. 



action of bromine, 194. 



of nitric acid, 194. 



Sulphopyromucic acids, on, 188. 



theoretical considerations, 220. 

 Sulphuric acid, fuming, action of, 



upon /3S-dibrompyromucic acid, 

 218. 



upon tribrompyromucic acid, 220. 



Sun, carbon in the, on the existence 

 of, 10. 

 oxygen in the, 1. 

 platinum in the, on the existence 

 of certain elements, together 

 with the discovery of, 14. 

 Swain, George Fillmore, election of, 

 311. 



Tagetes Pringlei, 279. 

 Telephone circuits, an empirical rule 

 for constructing, 125. 

 experiments, method of, 125. 



results of, 128. 

 tables, 120, 127, 129, 130-134. 

 Tetrabromdinitrobenzol, 146. 

 Thalictrum grandifolium, 267. 

 pinnatum, 267. 

 Wrightii, Gray, 268. 

 Thermometry, boiling points of naph- 

 thaline, benzophenone,and ben- 

 zol under controlled pressures, 

 with special reference to, 237. 

 Thomson, Elihu, election of, 311. 

 Tilloea viridis, 272. 

 Tillandsia Wilsoni, 266. 

 Tin in the sun, 18. 

 Toy, Crawford Howell, election of, 



312. 

 Triamidotrinitrobenzol, 142. 



properties, 143. 

 Trianilidotrinitrobenzol, 145. 



properties, 146. 

 Trianiline disilicotetrafluoride, 21. 



properties, 23. 

 Tribromaniline, symmetrical, 28. 

 Tribrompyromucic acid, action of 

 fuming sulphuric acid upon, 

 220. 

 Tribromtrinitrobenzol, on, 138-148. 



properties, 140. 

 Trichinoline disilicotetrafluoride, 30. 



properties, 30. 

 Tridimethvlamine disilicotetrafluo- 

 ride, 32. 

 properties, 32. 

 Tridimethylaniline disilicotetrafluo- 

 ride, 30. 

 properties, 30. 

 Tridiphenylamine disilicotetrafluo- 

 ride, 28. 

 properties, 29. 

 Trifolium Howellii, 262. 



