1903.] BAILEY—MOVEMENT IN PLANT-BREEDING. 63 
foundation. During the first four years that it was in our field 
tests it averaged 4.9 bushels more than the parent wheat, as dis- 
played by the following table of average yields, showing an increase 
over its parent variety of more than twenty per cent.: 
PUES ety PIN MOM sw 5's <6 lag ait catan pu ate otvia Unvars Oh eeotn 28.5 bushels, 
RENUEREE ONES) UOTE oo Ss cit ahasnig aie oh erathin ais 314 eS TE 236. «6 
CETUS oes DATE ie ERNE eR Eo mee amp ted Age 
“‘In 1902, this wheat was sent in four-bushel lots, at $1.50 per 
bushel, to three hundred and seventy-five farmers. Eighty-nine 
reports gave comparisons that were fair both to the new and old 
wheats, and there were obtained the following average yields, 
showing an increase over the common wheats of the entire State of 
eighteen per cent. If this increase could be applied to one-tenth 
of the area of the wheat crop in Minnesota, the increased yield 
would be worth over a million dollars : 
Maren ARTO TOGA. Solas aedees was wis Gee eae eae e's back 21.5 bushels, 
Sommonbkwheatsa2 N45 Fie sesso snake S08 ee Se TOLz ees 
LT CRRSE RS eat Sse HANS AEN RE Cat aa RE A 35S) wre 
“The third example is even more pronounced. Seven years ago 
Prof. Hays chose seven samples of the common Minnesota and 
Dakota flax, and made by selection many new types for the pro- 
duction of seed, and numerous other types especially for produc- 
tion of fibre. The following table gives the general results: 
Yield of Yield of Height in 
grain, straw, inches, 
Av. of 4 best varieties selected for seed.......... 17.8 1,40 23 
Av. of 4 best varieties selected for fibre.......... 10.5 1.76 35 
Av. of 4 best common varieties (from outside 
PUICE)G Gor bo 2 obs Doe oae.cenoee ae cero II.9 1,52 24. 
5-9 = 
‘‘Here in field trials, in 1902, the increased yield per acre of 
the new varieties bred for seed is forty-nine per cent.; and the in- 
creased height of the new varieties bred for fibre is forty-six per 
cent. more than the common flax,’’ 
‘‘We have developed statistical methods,’’ Professor Hays 
writes, ‘‘of dealing with such plants as wheat, alfalfa, corn, and, 
