XX LIST OF ILLUSTRATIONS 



PIG. PAGB 



27. A Head and Grains of Bearded Barley 74 



28. The Large Clasps of Barley Leaf 75 



29. Head and Spikelet of Beardless Barley 76 



30. Roots of Corn 47 Days after Level Planting. (Kansas Ex- 



periment Station) 79 



31. Showing Roots of Com 47 Days after Planting in Deep 



Furrows. (Kansas Experiment Station) .... 81 



32. Brace-roots on the Corn Plant 82 



33. Part of a Corn Leaf showing Wavy Margins .... 84 



34. An Ear of Corn on which Leaf-blades are home on the Tips 



of many of the Shucks 85 



35. Differences in Height and Position of Ear in the Same Va^ 



riety 87 



36. Diagram showing Course of the Pollen-tube from SUk to 



Ovary. (C. S. Ridgway) 89 



37. The Embryo-sac of Com at the Time of Fertilization. (F. E. 



Lloyd) 90 



38. A Well-proportioned Ear of a Hard Yellow Variety . . 91 



39. Transverse Section througli Corn Grains . . . .94 

 40-45. Ears of Henry Grady Corn to be criticized by pupils. 



(L. N. Duncan) 102-103 



46-57. Ears of Corn with Various Defects. (L. N. Duncan) 104-107 



58. Ear with Long, Well-formed Grains 108 



59. Ear with Short Grains 108 



60. An Ear having too much Space between Grains near the 



Cob 108 



61. An Ear in which there is no Lost Space between Grains near 



the Cob 108 



62. Showing Variations among Com Grains .... 109 



63. Various Shapes of Corn Kernels. (Michigan Experiment 



Station) 110 



64. Sections across Grains of Dent, Flint, Pop, Sweet, and Soft 



Corn . . 112 



65. Longitudinal Sections through Grains of Dent, Flint, Pop, 



Sweet, and Soft Corn 113 



66. Showing an Ear with Tip well covered by Shucks . . 115 



67. Showing an Ear Tip not well covered by Shucks . . .115 



