INDEX TO VOLUME XXI* 



Abbe, C, obituary notice of S. P. 

 Langley, 321. 



Abbe, E., memorial to. 338. 



Abraham, H., Ions, Electrons and 

 Corpnscules, 466. 



Academy, National, meeting at 

 Washington. 406. 



Agassiz, A., Albatross Expedition to 

 Eastern Pacific, 257. 



Alaska, Copper River region, geol- 

 ogy, Mendenhall, 82 ; Mesozoic sec- 

 tion in. Stanton and Martin, 181. 



Albatross Expedition to the Eastern 

 Pacific, Agassiz, 257. 



Allen, E. T., polymorphic forms of 

 calcium metasilicate, 89. 



Arizona, Coon Butte, Barringer and 

 Tilghman, 402 ; copper deposits, 

 Lindgren, 332 ; stonv meteorite. 

 Mallet, 347. 



Association, American, meeting at 

 New Orleans, 188. 



Auer burner, spectrum of, Rubens, 

 172. 



BOTANY. 



Desmidiace*, British, West, 477. 



Fungi, of N. America, Index, Vol. 

 1, pt. 1, Farlow, 87. 



Pflanzenfabel in der Weltliteratur, 

 Wlinsche, 477. 



Plant response as a means of phy- 

 siological investigation, Bose, 476. 



Plants, manganese as fertilizer, 248. 



Rhizopoda, British freshwater. Cash 

 and Hopkinson, 475. 

 Bradley, W. H., precipitates on as- 

 bestos, 453. 

 British Museum, catalogue of Glos- 



sopteris flora, Arber, 474; Madre- 



porian corals, Bernard, 474. 

 — New Guinea, geological features, 

 • Maitland, 404. 



Brooklyn Institute, bulletins, 479. 

 Brooks, W. R., The Oyster, 88. 

 Brown, J., interaction of hydrochloric 



acid and potassium permanganate, 



41. 

 Buchanan, J. Y., determination of 



specific gravity of soluble salts, 25. 

 Bumstead, H. A., heating effects of 



Rontgen rays in different metals, 1. 



B 

 Baker, R. H., solar eclipse of 1907, California, Miocene foraminifera, 



Ball, S. H., pre-Cambrian rocks of j Canada.^geol. survey, see GEO- 

 LOGICAL SURVEYS. 



Carnegie Institution, publications, 



Georgetown, Col., 371 



Ballore, F. de M. de, les Tremble- 

 ments de Terre, 331. 



Barnes, C, nucleationof the atmos- 

 phere, 400. 



Bauschinger, Bahnbestimmung, 478. 



Berry, E. W., Prorosmarus alleni 

 from Virginia, 444. 



Birds, see ZOOLOGY. 



Boltwood, B. B., radio-activity of 

 salts of radium, 409 ; radio-activity 

 of thorium minerals and salts, 415. 



Bose, J. C, Plant response as a 

 means of investigation, 476. 



Boston Society of Natural History, 

 Guide to Invertebrate Collection, 

 Sheldon, 336, 475. 



258, 479. 

 Ceylon minerals, Coomaraswamy, 



186. 

 Chamberlin, T. C, geology, 400. 



CHEMICAL WORKS. 



Ammonia, liquid, as a solvent, 



Bronn, 79. 

 Chemistry, Conversations on, Ost- 

 wald, 248. 

 — Progress for 1904, Annual Report, 

 80. 

 Elements and Compounds, Affini- 

 ties of, Martin, 79. 



* This Index contains the general heads,' Botany, Chemistry (incl. chem. physics), Geology, 

 Minerals, Obituary, Rocks, Zoology, and under each the titles of Articles referring thereto are 

 mentioned. 



