LIST OF ILLUSTRATIONS xxi 



ITG- PAGE 



68, 69. Varieties of Com. (Alabama Experiment Station) 123, 124 



70. Showing tlie Immediate Effects of crossing a White Pop 



Corn with Pollen from a Yellow Dent Corn . . .127 



71. Relative Yields of the Same Variety of Corn from 2 Breed- 



ing Rows of the Same Length. (Oklahoma Experiment 

 Station) 132 



72. Diagram showing Arrangement of Rows in Corn Breeding- 



plot 134 



73. Germinator made from a Soap Box. (Office of Experiment 



Stations, U. S. Dept. Agr.) 139 



74. Showing Injury from In-breeding Corn. (TJ. S. Department 



of Agriculture) 141 



75. Showing Larger Yield on Row not In-bred. (U. S. Depart- 



ment of Agriculture) 141 



76. Young Corn Plants, from Tip, Middle, and Butt Kernels. 



(Michigan Experiment Station) 146 



77. A Stalk-cutter. (B. F. Avery & Sons Co.) . . . .158 



78. A SubsoU Plow. (L. H. Bailey) 163 



79. A Turn-plow 164 



80. A Disk-plow. (B. F. Avery & Sons Co.) . . . . 165 



81. Combined Lister and Corn Planter. (U. S. Department of 



Agriculture) 165 



82. A One-row Corn Planter. (B. F. Avery & Sons Co.) . . 167 



83. Diagram of Young Corn Plants 168 



84. Hand Corn Planter, for Replanting 169 



85. A Spike-tooth Harrow. (B. F. Avery & Sons Co.) . 171 



86. A Weeder. (L. H. Bailey) 172 



87. A One-horse, Spring-tooth Harrow. (B. F. Avery & Sons 



Co.) 173 



88. Check-row Corn Planter with Double Disks to open a Deep 



Furrow. (U. S. Department of Agriculture) . . .175 



89. Cowpeas growing between Rows of Com .... 182 



90. The Williamson Method of Corn Culture . . . .186 



91. Condition of Surface after "Laying by" Corn according to 



the Williamson Plan 187 



92. Showing "Throw-board" on Wagon-body used in Harvest- 



ing Corn. (Oklahoma Experiment Station) . . . .190 



