INDEX. 



393 



Lesquerella Gordoni, var. sessilis, 253. 



gracilis, 253. 



var. sessilis, 253. 



grandiflora, 250. 



Kingii, 251. 



lasiocarpa, 251. 



Lescurii, 250. 



Liudheimeri, 253. 



Ludoviciana, 252. 



var. arenosa, 252. 



montana, 251. 



Monte vidensis, 251. 



Nuttallii, 252. 



occidentalis, 251. 



pallida, 253. 



Palmeri, 252, 255. 



purpurea, 253. 



recurvata, 253. 



repanda, 252. 



Schaffneri, 254. 



Wardii, 252, 255. 

 Leucsena Greggii, 272. 

 Light, ultra violet, wave-lengths of 

 metallic spectra in the, 288. 



selective absorption of metals 

 for, 299. 

 Linum Pringlei, 269. 

 Lithium in the sun, 18. 

 Lomentaria Baileyana, 118, 119. 



Coulteri, 119. 



kaliformis, 114, 115, 118. 

 Louteridium, 283. 



Donnell-Smithii, 284. 

 Lupinus montanus, HBK., 270. 



var. glabrior, 270. 



M. 



Maine, Henry James Sumner, death 

 of, 315. 

 notice of, 356. 

 Malvastrurn jacens, Watson, 269. 

 Maxillaria Yzabalana, 286. 

 Metals, selective absorption of, for 



ultra violet light, 299. 

 Meteorites, catalogue of all recorded, 

 with a description of the speci- 

 mens in the Harvard College 

 collection, including the cabi- 

 net of the late J. Lawrence 

 Smith, 37. 

 alphabetical index, 103. 

 description of arrangement of 



catalogue, 38. 

 list of illustrations, 40. 



Mexican plants, some new species of, 

 chiefly of Mr. C. G. Pringle's 

 collection in the mountains of 

 Chihuahua, in 1887, 268. 



Microstylis crispata, Reich, f. ?, 282. 

 Pringlei, 282. 



Molybdenum in the sun, 17. 



Munro, Hugh A. J., death of, 310, 

 315. 

 notice of, 365. 



N. 



Napthaline, 239, 244, 246. 

 Napthaline, benzophenone, and ben- 

 zol under controlled pressures, 

 boiling points of, with special 

 reference to thermometry, 237, 



air thermometer, 240. 



boiling point apparatus, 242. 



instrumental errors, 244. 



preparation of substances, 244. 



pressure regulator, 243. 



results, with deduced formulae 

 and tables, 245-247. 



summary of results of investiga- 

 tion, 239. 



O. 



Oxygen in the sun, 1. 



apparatus used, 3. 



bright lines in the solar spec- 

 trum, 8. 



method of working, 4. 



previous investigations, 2. 



table of wave-lengths, 5, 6. 



test of the existence of, 7, 8. 

 Oxygen and hydrogen, the relative 

 values of the atomic weights 

 of, 149. 



additional note on, 182. 



P. 



Parabromaniline, 28. 

 Pectis aquatica, 279. 

 Pentstemon Pringlei, 281. 



Shockleyi, 265. 

 Phellodendron. 223. 

 Photography of the least refrangible 



portion of the solar spectrum, 



301. 



