6io 



SUBJECT INDEX 



*Rubber goods, determination of free 

 carbon in. A. H. Smith and S. 

 W. Epstein. 45. 



*Silicate and carbonate rocks, analysis 



of. W. F. HiLLEBRAND. 299. 



Anthropology. *Aboriginal American 

 antiquities, handbook of. Part I. 

 Lithic industries. W. H. Holmes. 

 47. 



fCaves in the Ozark region of Mis- 

 souri, explorations in. Gerard 

 Fowke. 335. 



fChild welfare work, national im- 

 portance of. Arthur Newsholme. 

 394. 



tCliff dwellings, genesis of. J. Wal- 

 ter Fewkes. 334. 



International and interclass misunder- 

 standings. John R. Swanton. 

 405. 



*Languages, a structural and lexical 

 comparison of the Tunica, Chiti- 

 ^ macha and Atakapa. John R. 

 Swanton. 47. 



*Lithic industries, Part I of hand- 

 book of aboriginal American anti- 

 quities. W. H. Holmes. 47. 



*Villages and village sites, native, 

 east of the Mississippi. David I. 

 BUSHNELL. 178. 



*Villages, castles and towers, pre- 

 historic, of southwestern Colorado. 

 J. Walter Fewkes. 80. 

 Apparatus. fManometer, a 15-atmos- 

 phere, and a 100-atmosphere pis- 

 ton gage. H. C. Dickinson and 

 C. H. Meyers. 499. 



fMicrophotometer for photographic 

 densities, a new. W. F. Meggers 

 and Paul D. Foote. 497. 



*Potentiometer for thermoelement 

 work. Walter P. White. 41. 



*Vibration galvanometer, a new form 

 of. P. G. Agnew. 469. 

 Astronomy. fSolar eclipse of May 29, 

 1919, further results of observa- 

 tions of. L. A. Bauer. 476. 



fSolar eclipse, total, at Cape Palmas, 



Liberia, May 29, 1919. L. A. 



Bauer. 112. 

 tSolar eclipse, total, at Sobral, Brazil, 



May 29, 1919. D. M. WiSE. 113. 

 fSolar studies in South America. 



C. G. Abbot. 111. 

 Biochemistry. *Pellagra, biochemical 



studies of the saliva in. M. X. 



Sullivan and K. K. Jones. 415. 



Biology. Bioclimatic law, the. An- 

 drew D. Hopkins. 34. 

 fYellowstone Park, biological prob- 

 lems in. H. M. Smith. 583. 



Botany. Agonandra, North American 

 species of. Paul C. StandlEy 

 505. 



^Andira excelsa, poisonous seeds of. 

 F. L. Lewton. 500. 



Avocados, preliminary revision of 

 North American and West Indian. 

 S. F. Blake. 9. 



Boron, effect of salts of, upon the 

 distribution of desert vegetation. 

 Karl F. KellERMan. t420, 481. 



fBritish Guiana, a botanical trip to. 

 A. S. Hitchcock. 500. 



fBritish Guiana, floral aspects of. A. 

 S. Hitchcock. 585. 



f Bulb culture, experiments in. David 

 Griffiths. 212. 



f Flora of Utah and Nevada. Ivar 

 TiDESTROM. 422. 



*Grasses of the United States, genera 

 of, with special reference to eco- 

 nomic species. A. S. Hitchcock. 

 391. 



*Growth and reproduction in plants, 

 effect of the relative length of day 

 and night and other factors of the 

 environment on. W. W. Garner 

 and H. A. Allard. 392. 



Kidney cotton, history of. Freder- 

 ick L. Lewton. 591. 



Mahoganies, true {Swietenia) , re.Yi?,\on 

 of. S. F. Blake. 286. 



§Meyer memorial medal. 383. 



