IV Journal of Agricultural Research voLvi 



Page 



Ornix gerniinatella, the Unspotted Tentiform Leaf Miner of 

 Apple. L. Haseman 289 



A Western Fieldrot of the Irish Potato Caused by Fusarium 



radicicola. O. A. PratT 297 



Comparative Study of the Root Systems and Leaf Areas of Corn 



and the Sorghums. K. C. Miller 311 



Production of Clear and Sterilized Anti-Hog-Cholera Serum. 

 M. Dorset and R. R. Henley 333 



Silver-Scurf of the Irish Potato Caused by Spondylocladium 



atrovirens. Eugene S. Schultz 339 



Woolly Pear Aphis. A. C. Baker and W. M. Davidson 351 



Pathological Histology of Strawberries Affected by Species of 



Botrytis and Rhizopus. Neil E. Stevens 361 



Life Histories and Methods of Rearing Hessian-Fly Parasites. 



C. M. Packard 367 



Effect of Rontgen Rays on the Tobacco, or Cigarette, Beetle and 

 the Results of Experiments with a New Form of Rontgen Tube. 

 G. A. Runner 383 



Stimulating Influence of Arsenic upon the Nitrogen-Fixing Or- 

 ganisms of the Soil. J. E. Greaves 389 



Transmission and Control of Bacterial Wilt of Cucurbits. Fred- 

 erick V. Rand and Ella M. A. Enlows 417 



Correlated Characters in Maize Breeding. G. N. Collins 435 



Comparative Study of the Amount of Food Eaten b)'^ Parasitized 

 and Nonparasitized Larvae of Cirphis unipuncta. Daniel G. 

 Tower 7" 455 



Aleyrodidae, or White FHes Attacking the Orange, with Descrip- 

 tions of Three New vSpecies of Economic Importance. A. L. 

 Quaintance and A. C. Baker 459 



Relative Water Requirement of Corn and the Sorghums. Edwin 

 C. Miller 473 



Availability of Mineral Phosphates for Plant Nutrition. W. L. 



BURLISON 485 



California Green Lacewing Fly. V. L. Wildermuth 515 



Rape as Material for Silage. A. R. Lamb and John M. Evvard. . 527 



Effect of Autolysis upon Muscle Creatin. Ralph Hoagland and 



C. N. McBryde 535 



Storage Rots of Economic Aroids. L. L. Harter 549 



Experiments with Clean Seed Potatoes on New Land in Southern 



Idaho. O. A. Pr.-^tt s73 



Digestibility of Very Young Veal. C. F. L.'VNGWORThy and A. D. 

 Holmes 577 



Influence of Calcium and Magnesium Compounds on Plant Growth. 

 F. A. Wyatt 589 



