528 



SUBJKCT INDEX 



fHieroglyphic writing of ancient Mayas. 



S. G. MoRLEY. 377. 

 flndians of Yosemite region, Cal. C. 



Hart Merriam. 379. 

 fMaize, origin and early history of. 



G. N. Collins. 378. 

 fSamoa, old and new. W. E. Safford. 



378. 



Apparatus. fHypsometer as a precision 

 instrument. E. F. Mueller and T. S. 

 Sligh, Jr. 167. 



Archeology. fAnatolia, archeological ret- 

 rospect and prospect in. W. Ramsey. 

 23. 



§Pueblo Bonito explorations. 499. 

 Astronomy. fAtmospheric electric obser- 

 vations during solar eclipse of May 29, 

 1919, and summary of similar observa- 

 tions. S. J. Mauchly. 163. 



*Observations with nine-inch transit 

 circle 1903-11, results of. W. S. 

 Eichelberger and H. R. Morgan. 

 189. 



fSolar constant observing stations. C. G. 



Abbot. 473. 

 fZenith tube at Washington, photo- 

 graphic variation of latitude and con- 

 stant of aberration from four years' 

 work with. F. B. LiTTELL. 241. 

 Bacteriology. Dilution method of counting 

 bacteria. P. V. WELLS and W. F. 

 Wells. 265. 

 Bioclimatics. Bioclimatic zones of the 

 continents; with classification. A. D. 

 Hopkins. 227. 

 International problems in bioclimatics 

 with special reference to distribution of 

 plants and animals. A. D. Hopkins. 

 Biology. *Classification, new, of animals. 

 A. H. Clark. 495. 

 Correlation between functions, and 

 spurious correlation. L. J. Reed. 449. 

 fMan and nature in the Philippines. E. 



D. Merrill. 114. 

 tProblems in economic biology in tropi- 

 cal America. J. R. Johnston. 116. 

 Botany. fAfrica, vegetation of. H. L. 

 Shantz. 243. 

 *Barley, Haunchen, daily developments 



of kernels of. H. V. Harlan. 136. 

 *Barley kernels in normal and clipped 



spikes, development of, and limitations 



of awned and hooded varieties. H. V. 



Harlan and Stephen Anthony. 137. 

 Bursera, new species of. H. PiTTiER. 



229. 

 §Chaulmoogra oil, Taraktogenos kurzii, 



the source of. J. R. Rock. 380. 

 fChinese botany and botanists. W. J. 



Swingle. 64. 

 *Cold, influence of, in stimulating the 



growth of plants. F. V. CoviLLB. 54. 

 Datura, synopsis of genus. W. E. Sap- 



ford. 173. 

 fFlora of the Iberian peninsula. Ivar 



TiDESTROM. 243, 315. 

 fFungus, Philippine. W. H. WesTON. 



474. 



*Grasses, revisions of North American. 

 A. S. Hitchcock and A. Chase. 54. 



fHawaii revisited. W. E. Safford. 

 214. 



fHay fever and its specific botanical re- 

 lationships. H. M. Hall. 115. 



*Hordeum intermedium haxtoni, occur- 

 rence of, in crosses between H. vulgare 

 pallidum and H. distichon palmella. 

 H. V. Harlan and H. K. Hayes. 137. 



Ichthyothere, new species of. S. F. Blakb. 

 301. 



*Maize, heritable characters of — lineate 

 leaves. G. N. Collins and J. H. 

 Kempton. 55. 



Maize, linkage between brachytic culms 

 and pericarp and cob color in. J. H. 

 Kempton. 13. 



fMaize, origin and early distribution of. 

 G. N. Collins. 378. 



Maximilianea (Cochlospermum), Ameri- 

 can species of. S. F. BlakE. 125. 



fPhilippines, vegetation of. E. D. MER- 

 RILL. 120. 



fPlants, our disappearing wild. A. A. 

 Hansen. 118. 



fRice, introduction of resistant. H. 

 Metcalf. 474. 



*Sclerospora, conidial, of Philippine maize. 

 W. H. Weston, Jr. 260. 



fSkunk cabbage, Spathyema foetida. F. 

 M. Shull. 121. 



Swartzia in Panama and Guatemala. 

 H. PiTTiER. 155. 



