INDEX 275 
Soil, Effect of Green Manure at Different Stages of Growth 
upon the Relative Abundance of Actinomyces, Non- 
Spore-Formers and Spore-Formers in the, by Dr. Thomas 
Lj. Misetin? Ca seriget eso ee eS Sn a ee 245 
Soil Moisture in Relation to Forest Planting, Evaporation and, 
Wary Ga a a ila a ee eels 116 
Soils for Irrigation Water, Experiments on Capacities of, by 
0.) W: denaglgen anil Bi Las) Wrest ccicteec caster dot -radeens 139 
Soils to the Limit of Toxicity, The Relation of the Method of 
Analyzing ‘Alkali,/ by Di; Ws. Pittman: -.25-..22.205.06.00.-ccchecisei 95 
Some Problems in Daylight Illumination, by C. Arthur Smith .... 167 
Some Uncommon Plant Pests, by A. L. Matthews .................--..--- 41 
Standardization from Constant Boiling Hydrochloric Acid, 
by 4. 8: /Bopner'6nd TB Brighton (7. ee 173 
Steam in Retorting Oil-Shales, Use and Function of, by M. J. 
Gavin ands IP Or Saowainy a eee PFO Le eee 232 
Stevenson, C. C.: Metallurgy of the Chloride Volatilization 
Proge@pe, | fl) QUOI CAR ee ACU PAR Ek 2 | UNE tare 226 
Temperature as a Function of the Latitude, Elevation, Time 
of Day, and Day of Year, The Normal, by Frank L. West .... 247 
Temperature by Means of the Equation of Seasonal Tempera- 
ture Variation and of a Modified Thermograph Record, 
Determination of the Normal, by Dr. Frank L. West, N. 
E. Hdlefaen and! Sei Bs Binet ed aN 84 
The Electron Theory of Conduction of Electricity, by Frank 
Ta,  WieSG a sacgeg hcl Le ela tS ee ee Cr a 126 
Theory of the Constitution of Matter, The, by Orin Tugman ........ 120 
The Problem of Handedness, by A. L. Beeley ...-.............--------------- 59 
The Quest of the Student of Nature, by Dr. C. G. Plummer ........ 29 
The Relation of the Method of Analyzing Alkali Soils to the 
Limits of Toxicity by Di Wy ae Ween, Se 95 
The Ristance of Thin Metal Films When Exposed to Ultra 
Violet: Laps bp Orta, Terragen asad cpt na tase catoeoeuseoasiaes eee ekbae 161 
The Second Reclamation of the Desert (abstract), by R. A. Hart 40 
bis, Bs: Gy <M VC aa ue 8 ee eee 4 
Tomatoes, The Breeding of Canning, by M. C. Merrill and 
Tracy Fie Alen ee ens eel ee ai Uae ck ge de ag na Rent 133 
Tree Diseases, Farest, by As Ov Garret®, .2.3..0s  e 182 
Tree Saplings, Relation of Precipitation to Height Growth 
of Forest; Big 0s iiss imei oon pet ae i eke eee oes 260 
Tugman, Orin: An Equation of the Density Exposure Curve of 
a Photographic Plate Taking Reversal into Account, 
(abstract) cit aicaiscst sas oe ceseece ak aes wee ee Be ae ee eae 36 
arena, OTUs 5) IIENEL nbs enlesotencsacten tt mere cae mtd neice ely 5 
Tugman, Orin: The Resistance of Thin Metal Films When Ex- 
posed to’ Ultra: Violet Tei 20 eos esos aheceacicwts 161 
Tugman, Orin: The Theory of the Constitution of Matter, 
(Presiclei Gill ire ee eee eee eee eee ge 120 
Uncommon Plant Pests, Some, by A. L. Matthews ....................--.- 41 
