CONTENTS. xm. 



Bulletin 189, Studies of the Codling Moth in the Central Appalachian *^*" 



Region, F. E. Brooks and E. B. Blakeslee qi 



Bulletin 190, The Drainage of Irrigated Land, R. A. Hart 88 



Bulletin 191, Demurrage Information for Farmers, G. C. White 91 



Bulletin 192, Insects Affecting Vegetable Crops in Porto Rico, T. H. Jones_ 59 

 Bulletin 193, The Drainage of Jefferson County, Tex., H. A. Kipp, A. G. 



Hall, and S. W. Frescoln 183 



Bulletin 194, The Plow of Water in Irrigation Channels, F. C. Scobey 183 



Bulletin 195, Potato Breeding and Selection, W. Stuart 233 



Bulletin 196, Methods Followed in the Commercial Canning of Foods, 



A. W. Bitting 210 



Bulletin 197, Homemade Lime-sulphur Concentrate, E. W. Scott 154 



Bulletin 198, Report Upon the Cypress Creek Drainage District, Desha 



and Chicot Counties, Ark., S. H. McCrory et al 288 



Bulletin 199, Loss in Tonnage of Sugar Beets by Drying, H. B. Shaw 185 



Bulletin 200, A Maggot Trap in Practical Use ; An Experiment in House- 

 fly Control, R. H. Hutchison 15g 



Bulletin 201, Native Pasture Grasses of the United States, D. Griffiths, 



G. L. Bidwell, and C. E. Goodrich 227 



Bulletin 202, The Alcohol Test in Relation to Milk, S. H. Ayers and W. T. 



Johnson, jr 113 



Bulletin 203, Field Studies of the Crown Gall of Sugar Beets, C. O. Town- 

 send 147 



Bulletin 204, Report on the Gipsy Moth Work in New England, A. F. 



Burgess 254 



Bulletin 205, Eleven Important Wild Duck Foods, W, L. McAtee 251 



Bulletin 206, The Woolgrower and the Wool Trade, F. R, Marshall and 



L. L. Heller 270 



Bulletin 207, Cypress and Juniper Trees of the Rocky Mountain Region, 



G. B. Sudworth 343 



Bulletin 208, Fields of Native Prickly Pear in Southern Texas, D. Griffiths- 134 

 Bulletin 209, Testing Grape Varieties in the Vinifera Regions of the United 



States, G. C. Husmann 538 



Bulletin 210, Seed Production of Western White Pine, R. Zon 144 



Bulletin 211, Factors Affecting Range Management in New Mexico, E. O. 



Wooton : 268 



Bulletin 212, Observations on the Pathology of the Jack Pine, J. R. Weir__ 351 

 Bulletin 213, The Use of Land in Teaching Agriculture in Secondary 



Schools, PI Merritt 195 



Bulletin 214, Spring Wheat in the Great Plains, E. C. Chilcott, J. S. Cole, 



and W. W. Burr 137 



Bulletin 215, Composition of Corn (Maize) Meal Manufactured by Differ- 

 ent Processes and the Influence of Composition on the Keeping Qual- 

 ities, A. L. Winton et al 259 



Bulletin 216, Cotton Warehouses : Storage Facilities Now Available in the 



South, R. L. Nixon 191 



Bulletin 217, Mortality Among Waterfowl Around Great Salt Lake, Utah, 



A. Wetmore 251 



Bulletin 218, Oats in the Great Plains Area, E. C. Chilcott et al 232 



Bulletin 219, Corn in the Great Plains Area, E. C. Chilcott et al 231 



Bulletin 220, Road Models 393 



Bulletin 221, The Southern Corn Leaf-beetle, E. O. G. Kelly 358 



Bulletin 222, Barley in the Great Plains Area, E. 0. Chilcott et al — 230 



