INDEX 221 
Page 
Greaves, Dr. J. E.:The Influence of Arsenic Upon the Biological 
Transformations of Nitrogen of Soils (Summary)............ 
Cee ee Vy BIReT, Th.) Rive TREMTIONGEE .)o)6 nis odes hide ig sss 0! a © wiglae'e daie'le 5 
nO RIE ARRCRUPAOENEG 0/12 2 6c fbel'd sca Il = wlebl ig @/AI8 AAI wide ¥ icin Ginetta cs 5 
rer eer GM 5s VATEOMLION OC 2 a's jacciinial Siete les Hal aise ea doelele w widen ap 6 
Harris, Dr. Frank S.: The Alkali Content of Certain Utah Soils... 153 
Harris, Dr. Frank S.: Corn Under Irrigation (Summary).......... 120 
Harris, Dr. Frank S.: The Effect of Soil Alkali on Plant Growth 
OS TSAO URE GRRL EY ESSE LS BP GA OR KO YAN SDP NPS 131 
Harris, Dr. Frank S.: The Effect of Soil Moisture on the Mor- 
paolory at Certain ‘Plants (Stummary) ee naa. ete sla' ase 63 
Harris, Dr. Frank S.: The World Without Science (Presidential 
LCE ESS IS ISSR ARES EAR es ATL RRL Y 20 CaN i te 178 
Henderson! Proressor VW.) Wi: mentioned 3) su a 5 
LOS EOE ete che Lysiliea vere a pabetiny cate cane tela Wiciitbaid:& soisna ai HUN ncaa Uaeaue Baresi uneasy 0 22 
Hodson, E. E.: Some of the Present Day Problems in Forestry... 45 
Homer, Dr. Philena Fletcher: Nesting Habits of Bombus and 
DS TEE RESO Ie EAE A OTE RD Opn eID ATE OL CR a 16 
Homes), Mr) Philena, Pletcher:) mentioned (iis Ose eae els oe 5 
Honey Ants, The (Abstract)—A. O. Garrett.............0...02005: 22 
Industrial Research in the United States—Dr. Harvey Fletcher... 142 
Influence of Arsenic upon the Biological Transformation of 
Nitrogen in Soils (Summary)—Dr. J. E. Greaves............ 128 
Influence of Biological Investigations Upon the Other Sciences, 
Le See MEAT Mg) PPT INA Sp PL Up Rc RE 68 
Intensity of Nitrification in Arid Soils, The (Abstract)— 
Pe OR GRRE ALE MRATE | ae) shells ex ve raisin oa Vee o: MU AHea han Mal ARAL Ue ge 96 
Iron, The Rusting of (Abstract)—Dr. C. W. Porter.............. 63 
Iversen, L. Moth: An Essay Comparing Mammals and Birds of 
North Central Europe with Related Species in Northern 
RIPEN TEROG ILM! Sia at) fui ves ats alts aieiehvie a AhaNMM IAL thee Rh dean esa aie 199 
Jensen, Dr. C. N.: Blossom Infection by Smuts............00.00.5 106 
Peaere tan P98. INES ATER Ay 5 S)b icin Salashe aerate ebd wiclanebosiad sustete 6 
PORES ETA, | MATS HAs THRBHONEE | AU Lolo. eieidt Wil siale sue wicks 5,6 
Joseph, Thomas: The Liquid Sulphur Dioxid Method of Deter- 
mining Aromatic Hydrocarbon Oils (Abstract).............. 214 
Jurassic in Southeastern Utah, A General Survey of the— 
tay Sf os OA OTOH RD UATE NMAC SNCS Ae) PING OD a a A 33 
maaw ited Dr, Aj Als tnentioned ee yi Meee Ulead ly elec toe ee 5,6 
Korstian, C. F.: Value of Scientific Research in Forestry........ 186 
Kuhre, Kenneth D. and others: Chemical Properties of Utah 
ERY OE OCAEDOINS/ Ctwale cen sparc aiaiis Wee lath cog LL /are eC Meal Ara 78 
Mammals and Birds of Northern Central Europe with Related 
Species in Northern United States, An Essay Comparing— 
PCM BH iver Sien ley Ei) clay ere aa eu Eder Man gency iy ates atau (MICRON |e ea 199 
Mattill, Dr. H. A.: Recent Advances in our Knowledge of 
Proteus, Metabolism, CABSCEACED 01) 6 iid oicjeved w «sein a Uinialehvapinaemenee 105 
Maughan, Howard J.: Factors Affecting the Depth of Planting 
MUCUS | MOPMIDIE CSNERMEVETI AE YP lis). a a 2 ie! pss diol gidtctonsidhtuye tae ella 206 
Milles, Or: Newten: mentiqneds 0.026064). oh ds ee at, 6 
