GENERAL INDEX 



OF 



VOLUMES XXI-XXX OF THE FOURTH SERIES. 



Q'W In the references, heavy-faced type is used for the numbers of the volumes. 



Note. — The names of minerals are inserted under the head of Minerals ; all obituary notices are 

 referred to under Obituary. Under the heads Botany and Botan. Works, Chemistry and Chem. 

 Works, Geology, Rocks, Zoology, the references to the topics in these departments are grouped 

 together ; in many cases the same references appear also elsewhere. 



Initial capitals are in general used for the titles of books noticed. 



Abbe, C, obituary notice of S. P. 



Langley, 21, 321. 

 Abbe, E., memorial to, 21, 338. 

 Abraham, H., Ions, Electrons and 



Corpuscules, 21, 466. 

 Absorption and phosphorescence, 



Briininghaus, 29, 189. 

 Abstammungslehre, Steinmann, 27, 



341- 

 Academy of Sciences, National, 

 meeting at Baltimore, 1908, 26, 

 588; Boston, 1906, 22, 548; New 

 York, 1907, 24, 507; Princeton, 

 1909, 28, 563; St. Louis, 30, 430; 

 Washington, 1906, 21, 406; 1907, 

 23, 395; 1908, 25, 458; 1909, 27, 

 418; 29, 463. 



— Memoirs, No. 4, Vol. X, 22, 93. 

 Actinium, Boltwood, 22, 537; 25, 



291. 

 Adams, C. F., Physics, 27, 339. 

 Adams, F. D., elastic constants 



of rocks, 22, 95; flow of marble, 



29, 465. 



Adams, J. M., spectrum and ab- 

 sorption of Rontgen rays, 23, 

 91; transmission of Rontgen 

 rays, 23, 375. 



Adirondacks, geology of iron 

 ores of, Newland and Kemp, 

 26, 238. 



— ice-movement in Southwest- 

 ern, Miller, 27, 289. 



Aero-physics, units in, McAdie, 



30, 277. 



Africa, alkaline rocks of eastern, 

 Arsandaux, 23, 230. 



— Blood-sucking Flies, Austin, 

 29, 92. 



— diamonds in German South- 

 western, 27, 489. 



— Flora of, Thonner, 27, 344. 



— See South Africa. 



Agassiz, A., Albatross Expedition 

 to Eastern Pacific, 21, 257; 24, 

 450; teeth in Echinoneus, Van 

 Phels, 28, 490. 



— obituary notice, Verrill, 29, 

 561. 



Air, conductivity of, in intense 

 electric fields, Ewell, 22, 368. 



— periodicity of ionization, Wood 

 and Campbell, 23, 224. 



— liquid, vacuum vessels for, 

 Dewar, 25, 256. 



Alabama, Pleistocene flora, Berry, 

 29, 387- 



— underground water resources. 

 Smith, 24, 84. 



Alaska, coal resources, Collier, 

 23. 314- 



— Copper River region, geology, 

 Mendenhall, 21, 82. 



— Geography and Geology, 

 Brooks and Abbe, 22, 187. 



— geological section at Cape 

 Thompson, Kindle, 28, 520. 



— Mesozoic section in, Stanton 

 and Martin, 21, 181. 



— Pliocene climate at Nome, 

 Dall 23, 457. 



