LIST OF ILLUSTBATIONS Xxi 



FIG. VAC.E 



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



70. Showing the Immediate Effects of crossing a White Pop 



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



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



ing Eows 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. (Oifice of Experiment 



Stations, U. S. Dept. Agi-.) 139 



li. Showing Injury from In-breeding Corn. (U. S. Department 



of Agriculture) Ill 



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



ment of Agriculture) . . . . . . . . 141 



76. Young Corn Plant,s, from Tip, Middle, and Butt Kernels. 



(Michigan Experiment Station) ..... 140 



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



78. A Subsoil Plow. (L. II. Bailey) 103 



79. A Turn-plow 104 



80. A Disk-plow. (B. F. Avery & Sons Co.) .... 105 



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



Agriculture) 165 



82. A One-row Corn Planter. (B. F. Avery & Sons Co.) . . 107 



83. Diagi-am of Young Com Plants 168 



84. Hand Corn Planter, for Replanting 109 



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

 80. A Weeder. (L. II. Bailey) 172 



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



Co.) 173 



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



Eurrow. (U. S. Department of A.griculture) . . . 175 



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



90. The Williamson Method of Com Culture . . . .180 



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



the Williamson Plan ........ 187 



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



ing Corn. (Oklahoma Experiment Station) . . . . 100 



