366 



Index. 



Dale, T. N., drag-folding in Ala- 

 bama marble, 319. 



Dallas sand pits, fauna, Lull, 159. 



Denmark, Bog investigations, 

 Jessen, 356. 



Diaphragms, continuous tuning of, 

 King, 229. 



Diceratherium, Troxell, 197. 



Dye Chemistry, Fierz-David and 

 Mason, 52. 



E 



Earth and Sea, Secrets, Lankester, 



307. 

 Earth's Crust, Circulation, Tandy, 



232. 



— field of force, mechanical curios- 

 ities, Lambert, 129. 



East Africa, rift valleys, J. W. 



Gregory, 353. 

 Electricity, Technical, Starling, 56. 

 Electrons and Alpha Particles, 



Lind, 231. 

 Echinoderm Fauna of Torres 



Strait, Clark, 359. 

 Elles, G. L., Geological maps, 357. 

 Emch, H., Mathematik in der 



Natur, 232. 

 Eporeodoiis, Thorpe, 93, 309. 

 Evolution, Direction of Human, 



Conklin, 305. 



— Genetics, etc., Newman, 360. 



Fauna, Ammonite of Cuba, O'Con- 



nell, 354. 

 — • of Dallas sandpits, Lull, 159. 



— fish of California Tertiary, Jor- 

 dan, 354. 



— of Torres Strait, Clark. 359. 



— Trenton Group, Raymond, 57. 

 Field Museum of Natural History, 



1920 report, 60. 



Fierz-David, H. E., Dye Chemistry, 

 52. 



Florida, Geol. Survey, 56. 



Food Products, Bailey, 300. 



Foraminifera of the Philippines, 

 Cushman, 304. 



Fresenius, T. W., Chemical Analy- 

 sis, 229. 



Fuels, fossil, Stevenson, 304. 



Gastropods, living, of New Eng- 

 land, Morse, 308. 



Geographie, La, 361. 



— Societe, centenary, 361. 

 Geography of Illinois, Ridgley, 361. 

 Geological Explorations in Africa, 



353, 358. 



— Maps, Elles, 357. 



GEOLOGICAL REPORTS. 



Connecticut, 58. 

 Florida, 56. 

 Iowa, 58. 



Geology, Grabau, 355. 



GEOLOGY. 



Agriochoerus, Thorpe, 11 1. 

 Ammonite fauna of Cuba, O'Con- 



nell, 354. 

 Amynodonts, new, Troxell, 21. 

 Anticlines of Routt Co., Calif., 



Crawford, et al., 304. 

 Badlands, White River, O'Harra, 



303. 

 Csenopus, ancestral rhinoceros, 



Troxell, 41. 

 Conodonts, Genesee, Bryant, 57. 

 Cretaceous-Tertiary Problem, 



Matthew, 209. 

 Crinoid, fossil. Springer, 57. 

 Diceratherium, Troxell, 197. 

 Dolatocrinus, and its allies, 



Springer, 57. 

 Eporeodons, Thorpe, 93, 309. 

 Fauna, fossil. See FAUNA. 

 Fish fauna of California Tertiary, 



Jordan, 354. 

 Flora, fossil, of Monterey group, 



Chaney, 90. 

 Fuels fossil, Stevenson, 304. 

 Geologic climates. Evolution, 



Knowlton, 187. 

 Hyracodon, new species, Troxell, 



Mammalian remains, Cenozoic, 



Nevada, Stock, 250. 

 Merycoidodon, new, Thorpe, 334. 

 Palaontologie, Grundziige der, 



Zittel,_ et al, 235. 

 Paleozoic area in Louisiana and 



Texas, Miser, 61. 

 Pebbles, wedge work, Went- 



worth, 313. 

 Permian salt deposits, Darton, 



304. 



Pseudocycas from British Co- 

 lumbia, Berry, 183. 



Puenta formation, fossil flora of, 

 Chaney, 90. 



