IV Journal of Agricultural Research voi.xx 



Sclerotinia minor, n. sp., the Cause of a Decay of Lettuce, Celery, p age 

 and Other Crops. Ivan C. Jagger 331 



Permanence of Differences in the Plots of an Experimental Field. 

 J. Arthur Harris and C. S. Scofield 335 



Some Changes in Florida Grapefruit in Storage. Lon A. Haw- 

 kins and J. R. Magness 357 



A Bacteriological Study of Canned Ripe Olives. Stewart A. 



Koser 375 



Relation of the Soil Solution to the Soil Extract. D. R. Hoag- 

 land, J. C. Martin, and G. R. Stewart 381 



Effect of Season and Crop Growth on the Physical State of the 



Soil. D. R. Hoageand and J. C. Martin 397 



Carbon-Dioxid Content of Barn Air. Mary F. Hendry and Alice 

 Johnson 405 



Rice Weevil, (Calandra) Sitophilus oryza. Richard T. Cotton. 409 



Opius fletcheri as a Parasite of the Melon Fly in Hawaii. H. F. 



Willard 423 



Tamarind Pod-Borer, Sitophilus linearis (Herbst). Richard T. 



Cotton 439 



Influence of Temperature and Humidity on the Growth of 

 Pseudomonas citri and Its Host Plants and on Infection and 

 Development of the Disease. George L. Peltier 447 



Daubentonia longifolia (Coffee Bean), A Poisonous Plant. 



C. Dwight Marsh and A. B. Clawson 507 



Fusarium-Wilt of Tobacco. James Johnson 515 



Sugar Beet Top Silage. Ray E. Neidig 537 



Nodule Bacteria of Leguminous Plants. F. Lohnis and Roy 



Hansen 543 



Correlation and Causation. Sewall Wright 557 



Measurement of the Amount of Water That Seeds Cause to Become 

 Unfree and Their Water-Soluble Material. George J. Bouyou- 

 cos and M. M. McCool 587 



Inheritance of Syndactylism, Black, and Dilution in Swine. J. A. 



Detlefsen and W. J. Carmichael 595 



Four Rhynchophora Attacking Com in Storage. Richard T. 

 Cotton 605 



Concentration of Potassium in Orthoclase Solutions Not a Measure 

 of Its Availability to Wheat Seedlings. J. F. BreazEalE and 

 Lyman J. Briggs 615 



Composition of Tubers, Skins, and Sprouts of Three Varieties of 



Potatoes. F. C. Cook 623 



Further Studies in the Deterioration of Sugars in Storage. Nicho- 

 las Kopeloff, H. Z. E. Perkins, and C. J. Welcome 637 



Freezing of Fruit Buds. Frank L. West and N. E. Edlefsen . . 655 



