XXV111 LIST OF ILLUSTRATIONS 



FIGURE PAGE 



89. A lime-spreader, under view (CJ. S. Dept. Agr.) . . 309 



90. Acre-yields of wheat from manuring alone, and from ma- 



nuring with the addition of limestone and raw rock 

 phosphate (111. Agr. Expt. Sta.) . ."-.-. .311 



91. Plowing under rye for green manure (Derr) Y . . 315 



92. Plowing under cowpeas for green manure (Derr) . . 316 



93. Oats as a nurse-crop for red clover (Derr) . . . . 320 



94. Sowing oats on unprepared corn ground with the endgate 



seeder (Warburton) . . . .'. . . 323 



95. Closer view of the endgate seeder (Warburton) . . . 324 



96. Disking corn ground with the cutaway disk harrow for oat 



seeding (Warburton) . . . . -. : . . 325 



97. Putting in oats at Bloornington, 111. (Warburton) . . 326 



98. Date-of-seeding test with Winter barley (Derr) . . . 327 



99. Comparison of drilled and broadcasted Winter barley (Derr) 331 



100. Cutting small patches of grain with the cradle . . . 333 



101. The round form of shock, with cap sheaves (Warburton) . 334 



102. Oats in dutch shocks, not capped, in Minnesota . . . 335 



103. Shocks capped with several sheaves bound together, and 



placed in reverse position with the spikes downward 



(Derr) 336 



104. Chart showing average monthly precipitation in the Great 



Plains and Western Area (Weather Bureau) . . 340 



105. Comparison of rotation with continuous cropping for Winter 



wheat (Kan. Agr. Expt. Sta.) 345 



106. Corn and sunflowers, as a cultivated crop preceding Winter 



wheat, in Russia . 347 



107. One-horse drill for seeding grain between corn rows . . 349 



108. Summer tillage or bare summer-fallow .... 350 



109. Distribution of moisture in the soil at different stages of a 



4-year rotation (Rotmistrov) ..... 352 



110. Comparison of different methods of preparing the ground 



for Winter wheat in continuous cropping (Kan. Agr. 



Expt. Sta.) 357 



111. Breaking properly done 360 



112. Surface packer or Dunham roller (Derr) .... 361 



113. Subsurface packer 362 



114. Time-of-seeding test for Winter wheat .... 363 



115. Disk drill, with shovel attachment in front of disks . . 368 



