XX LIST OF ILLUSTRATIONS 



fin. PAOE 



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 Corn 47 Days after Planting in Deep 



Furrow.s. (Kan-sas 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 borne 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 Silk to 



Ovary. (C. S. Ridgway) 89 



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



Lloyd) 90 



38. A Well-proportioned Ear of a Plard Yellow Variety . . 01 



39. Transverse Section tlirough Corn Grains .... 04 

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



(L. N. Duncan) 102-103 



40-57. Ears of Corn with Various Defects. (L.N.Duncan) 104-107 



58. Ear with Long, Well-formed Grains 108 



59. Ear with Sliort Grains ........ 108 



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



Cob 108 



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



the Coi> 108 



02. Showing Variations among Corn Grains .... 109 



03. Various Shapes of Corn Kernels. (Michigan Experiment 



Station) .......... lio 



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



Corn ........... 112 



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



Sweet, and Soft Corn Ho, 



60. Showing an Ear witli Tip well covered by Shucks . . 115 

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



