INDEX 273 
Martin, Thos. L.: Effect of Green Manure at Different Stages 
of Growth upon the Relative Abundance of Actinomyces, 
Non-Spore-Formers and Spore-Formers in the Soil, 
CHUERCC) FiO en eter en ouerren. dL ravius Wola ca cust Sree a tee 245 
Matter from the Point of View of a Personalistic Philosophy, 
Dy Wie een a ee ea eee ae en en een 128 
Matter, The Theory of the Constitution of, by Orin Tugman .... 120 
Matthews, A. L.: Some Uncommon Plant Pests ...-......-...------------ 41 
Mebetrri term ie), FOGRLCI Ge cot tee a as ea cae tienen ieeLee RAO EE 6 
Merrill, Joseph F.: Is Electric Air Heating Feasible? ..............-.-.-- 103 
Merrill, M. C., and Tracy H. Abell: The Breeding of Canning 
AL OMAUOGHT oc: ccc. cinerea cate aa een a eee eka ete) ca eae eee ee 133 
Merrill, M. C.: Distilled Water as a Means for Growing Plants .... 75 
Merrul Mot. ! teniionem ut al en eae ee 5 
Metal Films when Exposed to Ultra Violet Light, The Resis- 
tancexot, Thin. by, Orine Wuoman. ae ae ee eee 161 
Metallurgy of the Chloride Volatilization Process, by C. C. 
DSLEVENSON) (enc tec. eu aise unc toe yee es Meal. fete eco ene MD SRN oe 226 
Metallurgy, Relation, of Chemistry to, by Edward P. Barrett ...... 155 
Microscope in Ore Dressing, The, by R. E. Head ...-.-...............----- 204 
Mid-Tertiary Deformation of Western North America, by Hy- 
rum Semeider 05602. kee es sab Ak ee eee eae 159 
Miller, Newton: Food and Feeding of Fledglings (abstract) ........ 45 
Pirller, Newton? smMenclonedey. se ee ee ee el a a 5 
Mineral Industry, Hydrometallurgy as Applied to the, by Clar- 
ence As Wirleht, ks she ie epee here eealte oe eer, a am eee ae See 142 
Morgan, John C.: Pyrometallurgy and its Future Possibilities .... 150 
Nealy Wield nentioned) jee esser rier = 0 As ae i ok See 4 
Neal, W. D.: Our Country—a Retrospect (Presidential address) 
CEE sy \1 2 7 Rae nee a 1) Mee Bee IT SCRAPS HA Cinna COTO RD FRAN 5 2 33 
Normal Temperature as a Function of the Latitude, Elevation, 
Time of Day, and Day of Year, The, by Frank L. West .....- 247 
North America, Mid-Tertiary Deformation of Western, by Hy- 
PUM SOHNE OR gots kote ee ean 2 Le ge ee Ee eee 159 
Nutrition, Vitamines in Relation to, by W. E. Carroll ................ 249 
Officers; ist: Of 4 22)55.. 52 see ee ae nots ae Sa ee eee eee 4 
Oil and Gas in Salt Lake and Cache Valleys, Possibilities of, 
by): Byram: Selneider -. 2c. sec seedeacian esha ana eee ears 38 
Oil Shales and Their Economic Importance, by Martin J. Gavin .. 145 
Oil-Shales, Destructive Distillation of, by L. C. Karrick -............. 211 
Oil-Shales, The Use and Function of Steam in Retorting, by 
Martin J. Gavin and J, J. Jakowsky \:22.-20-24231 Steet 232 
Ore Dressing, The Use of the Microscope in, by R. E. Head ........ 204 
Our Country—a Retrospect (abstract). Presidential address, 
By” Wis De RGA, eee eet el ate a eateries 33 
Overgrazing, Detection of by Means of Indicator Plants, by 
Mark “Anderscn eects te ee eee cee hee 56 
Personal Reminiscences of John W. Powell, by Francis Marion 
Bishop, 2255S es ae eh cr ah ache tenia ay eee dee eae 16 
