LIST OF ILLUSTRATIONS xxv 



FIG. PAGE 



38. Showing effect of five generations of breeding for high ears 



and low ears (111. Station) . . 199 



39. Diagram showing method of producing cross-bred seed of 



corn ..... . . 209 



40. Corn harvesting tools . . . . . . 256 



41. A corn-shocking horse (U. S. Dept. Agr.) 259 



42. Illustrating a method of cutting and shocking checked 



corn to economize steps (Farmers' Bulletin, 313) . 260 



43. Husking peg and husking hook (after Montgomery) ", 261 



44. Ear of corn showing characteristic injury by the corn- 



weevil (Paddock) . . . 269 



45. Corn smut (U. S. Dept. Agr.) . 271 



46. Plats of winter oats in November at the Maryland Agri- 



cultural Experiment Station, College Park, Md. 



(U. S. Dept. Agr.) . 280 



47. Smut of oats, showing a smutted head and for comparison 



a sound oat head (U. S. Dept. Agr.) . . 303 



48. Diagrammatic section through the stem of wheat about 25 



days after planting, (enlarged) (after Hayes and Boss) 307 



49. A wheat leaf (after Hunt) .... .308 



50. Front and side view of spikelet of wheat (after Hunt) . 309 



51. Illustrating the opening and closing of the wheat flower 



(after Hayes and Boss) . .310 



52. The reproductive organs of wheat (after Hayes and Boss) 311 



53. Cross-section and transverse section of a grain of wheat 



(Hunt's Cereals in America, p. 36) . 312 



54. Representative heads of five varieties of hard winter and 



hard spring wheat (U. S. Dept. Agr.) . . 316 



55. Heads of some beardless winter varieties of wheat (U. S. 



Dept. Agr.) . . 317 



56. Heads of some bearded winter wheat varieties (U. S. 



Dept. Agr.) . . 318 



57. Heads of Tennessee Winter barley, side and front views; 



also detached kernels with the awns removed (U. S. 

 Dept. Agr.) 348 



58. A grain of 2-rowed barley (U. S. Dept. Agr.) . 349 



59. High grade barley grains with the glumes removed to show 



the embryo with its collar-like scutellum (U. S. 

 Dept. Agr.) .... . 349 



