LIST OF ILLUSTRATIONS xxv 



PIG. 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 com 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 plantiag, (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 

 63. 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 



67. 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 



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



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

 I Dept. Agr.) . 349 



