AUTHOR INDEX 



521 



Hancock, E. T. *Oil and gas field, Lance 

 Creek, Niobrara County, Wyo. 237. 



Hansen, Albert A. fDisappearing wild 

 plants. 118. 



Harder, E. C. *Iron-depositing bacteria. 

 56. 



Harger, R. N. tMetol preparation of. 

 41. 



Harlan, Harry V. *Barley, Haunchen, 

 daily development of kernels of. 136. 



*Barley kernels in normal and clipped 



spikes, development of, and limita- 

 tions of awnless and hooded varieties. 

 137. 



*Hordetim intermedium haxloni, oc- 

 currence of fixed intermediate, in 

 crosses between H. vulgare pallidum , 

 and H. distichon palmella. 137. 



Harper, D. R. fAmmonia, thermo-dy- 

 namic properties of. 40. 



fMathematical equations for heat 



conduction in fins of air-cooled en- 

 gines. 513. 



Radiators for aircraft engines. 409. 



Harper, Francis. *Prunella modularis, 



new subspecies from Pyrenees. 63. 



Harrington, George L. *Mineral re- 

 sources of Goodnews Bay, Alaska. 376. 



Hayes, H. K. *Hordeum intermedium 

 haxtoni, occurrence of fixed interme- 

 diate, in crosses between H. vulgare 

 pallidum and H. distichon palmella. 

 137. 



Heinrich, Carl. *Lepidoptera, descrip- 

 tion of new species, larvae and pupae. 

 192. 



Hersey, M. D. fAeronautic instruments. 

 22. 



Irreversible time effects, theory of. 



149. 



Herty, Charles H. §Reserves of the 

 Chemical Warfare Service. 147. 



Hess, Frank L. *Tungsten deposits in 

 U. S. 487. 



Hewett, D. F. fOrientite, new silicate of 

 manganese and calcium. 445. 



Hicks, W. B. *Potash resources of Ne- 

 braska. 376. 



Hitchcock. A. S. *Grasses, revision of 

 North American. 54. 



HoLLisTER, N. *Ring-necked duck, system- 

 atic position of. 61. 



Hopkins, Andrew D. fBioclimatic law 

 and its application to entomology. 

 141. 



Bioclimatic zones of the continents; 



with classification. 227, t473. 



Bioclimatics, intercontinental prob- 

 lems in, with special reference to dis- 

 tribution of plants and animals. 

 223, t473. 



HosTETTER, J. C. *Optical glass, manu- 

 facture and uses of rolled. 110. 



Howard, L. O. ^Aphelinus mali parasitic 

 on Schizoneura lanigera taken to 

 France. 195. 



fEuropean entomologists, recent visit 



to. 215. 



flnsects, how the Government is 



fighting. 472. 



fMoroccan locust, fight in France 



against. 242. 



Hrdlicka, Ales. fAnthropological prob- 

 lems of the Far East and the Pacific. 

 377. 



Hudson, C. S. fSugars, American sources 

 of supply for the various. 41. 



Hyslop. J. A. fWire worm, introduction 

 of. 143. 



Isaacs, A. fAmmonia absorption ma- 

 chines, cause and prevention of non- 

 condensing gas formation. 41. 



JODiDi, S. L. t-Amino acids, polypeptides 

 and similar compounds, and plant dis- 

 eases. 43. 



Johnston, J. R. fProblems in economic 

 biology in tropical America. 116. 



Jones, A.I. fStratigraphy of metamorphic 

 rock of southeastern Pennsylvaia and 

 Maryland. 446. 



Jones, B. E. *Water supply of St. Mary 

 and Milk Rivers, 1898-1917. 510. 



Jones, D. B. fHydrolysis of kafarin. 41. 



Jones, Edward L., Jr. *Manganese 

 ore in Colorado. 393. 



*Manganese ore in Wyoming. 392. 



Jones, Grinnell. Tariff commission and 

 its relation to chemical industries. 41. 



Kalmbach, E. R. *Crow in relation to 

 agriculture. 512. 



Karcher, J. C. Chronographic recorder 

 of radio time signals. 303, t348. 



Karrer, Enoch. *Spectral transmission 

 of the atmosphere. 210. 



