IV Journal of Agricultural Research voi. x 



Page 



Two New Cambium Miners (Diptera). Charles T. Greene .... 313 

 Tougiiness of Bituminous Aggregates. Charles S. Reeve and 



Richard H. Lewis 3i9 



Origin of Alkali. Robert Stewart amd William Peterson .. . 331 

 Effect of Paraffin on the Accumulation of Ammonia and Nitrates 



in the Soil. P. L. Gainey 355 



Volatility of Organic Compounds as an Index of the Toxicity of 



Their Vapors to Insects. William IMoorE 365 



The Cyclamen Mite. G. F. Moznette 373 



Relation of Movement of Water in a Soil to Its Hygroscopicity and 



Initial Moistness. Frederick J. Alway and Guy R. McDolE. 391 

 Biologic Forms of Puccinia graminis on Cereals and Grasses. 



E. C. Stakman and F. J. Piemeisel 429 



Quassia Extract as a Contact Insecticide. N. E. McIndoo and 



A. F. SiEvERS 497 



A Nursery Blight of Cedars. GlEnn G. Hahn, Carl Hartley, 



and Roy G. Pierce 533 



Formation of "Black Alkali" (Sodium Carbonate) in Calcareous 



Soils. T- F. BreazEalE 541 



Effect of Three Annual Applications of Boron on Wheat. F. C. 



Cook and J. B. Wilson 591 



Energy Values of Hominy Feed and Maize Meal for Cattle. 



Henry Prentiss Armsby and J. August Fries 599 



Further Studies of the Mosaic Disease of Tobacco. H. A. Allard . 615 

 Study of the Proteins of Certain Insects wdth Reference to Their 



Value as Food for Poultry. J. S. McHargue 633 



Wind-Blown Rain, a Factor in Disease Dissemination. R. C. 



Faulwetter 639 



Index 649 



ERRATA 



Legend to PI. 6: fig. i should be 2, fig. 2 should be i. 



Page 160, last line, " 20 to 42 " should read " 55 to 115." 



Pase i6r, Footnote, " CoUetotrichum Higginscanum " should read " Colletotrichum Higginsianutn." 



Page 254, line 19 from bottom, "rachis" should read "rachilla." 



Page 306, line 7 from bottom, "PI. 46, B" should read "PI. 46, C." 



Page 314 should be 316, page 316 should be 314. 



Page 430, line 5 from bottom, "Table IV" should read "Table VI." 



Page 442, Table IX, "Ag-opyron caninum" should read "Agrostis canina." 



"00" ''2'' 



Page 442, Diagram 3, last line, — — should read -;; — 



Page 448, line 2 below Table XVII, "Table XVI" should read "Table XVII." 



Page 448, line 3 from bottom, "both" should read "all." 



Page 460, Table XXIX, "Agropyrmi stolonifera" should read "Agrostis siolcmifcra." 



Page 485, line 13, "longer" should read "shorter." 



Page 501, line s from bottom, "cochylis" should read "Conchylis." 



Page 637, under "Literature cited," "(2) Lusk, Graham. The Elements of the Science of Nutrition. 

 326 p., II fig. Philadelphia and London." should read "(2) Lusk, Graham. 1914. The Fundamental 

 Basis of Nutrition, p. 20, Yale Univ. Press." 



