1 66 



Journal of Agricultural Research voi. xviii. No. 3 



sources, and of 32 varieties grown from selected seed. Most of these were 

 Minnesota-grown. The average weight per kernel was higher for the dark 

 grains in one case and for the light grains in the other. 



Table VI. — Specific gravity, kernel-weight, and volume-weight of hard (h) and yellow- 

 berry (y) wheat 



951 y 



951 h 



10947.... 

 1094 h . . . . 

 11197.... 



1119 h 



11267. . . . 

 ii26h. . . . 

 11507.... 



iiSoh 



1516-87.. 

 I5i6-8h. . 

 1592-67.. 

 1592-6 h. . 

 1687-4 7 . . 

 1687-4 h . . 

 1687-8 7. . 

 1687-8 h . . 

 1687-10 7. 

 1687-10 h. 



Sample No. 



Average, 7. 

 Average, h. 



Specific 

 gravity. 



368 

 367 

 387 

 378 



351 

 362 



395 

 38s 

 380 



373 

 399 

 399 

 388 

 360 

 406 

 411 

 379 

 379 

 376 

 376 

 370 

 367 

 387 

 390 

 345 

 347 

 368 



381 

 378 

 370 

 404 

 404 

 372 

 378 

 396 

 395 

 377 

 370 

 391 

 386 



1.369 

 1.392 



Average 



weight per 



kernel. 



Gtn. 

 O. 029 



027 

 031 

 027 



031 

 025 



028 

 °33 



033 

 029 



031 

 026 



022 



030 



032 



029 



029 

 028 



027 



. 0291 



. 0287 



Volume 

 weight. 



Cm. per loo cc. 



83.42 

 '80.' 85 



80. 00 

 79-63 



79. 00 



83.72 

 82. 22 



79. 12 



77. 12 



82.88 

 78.66 



77.04 

 77-23 



82.05 

 79.29 



79.40 



78.88 



80. 00 



75- 15 



80.66 

 78.73 



Test 

 weight. 



Pounds. 



64. 76 

 62.80 



62. 15 

 61.86 



61-37 



64- 59 



63- 44 

 61. 46 



60. 33 

 63-95 



60. 69 

 59-44 



59-59 



61. 18 

 61.68 



61.28 

 62. 15 



58.38 



62.49 

 61. 00 



Stewart and Hirst (10) and Stewart and Greaves (9), of the Utah 

 Agricultural Experiment Station, found in comparing the average 

 weight of kernels of a considerable number of hard winter wheats, 

 semihard winter wheats, and soft winter wheats, that soft wheat varie- 

 ties had the heaviest kernels and hard wheats the lightest. 



