12 BULLETIN 1074, U. S. DEPARTMENT OF AGRICULTURE. 
greatest, 3,985, at the Oregon Agricultural Experiment Station, 
Corvallis, Oreg. At these western points growing conditions were 
much better for classification purposes than at eastern points. The 
absence of summer rains in the Western States is the principal reason 
for this, as plant characters and colors are more distinctly developed. 
At Chico, Calif., and Corvallis, Oreg., there was the added advantage 
of being able to sow both winter and spring wheats in the fall with- 
out danger of losing the spring forms. At Moro, Oreg., spring 
wheats sometimes survived from fall sowing also. At the latter 
point much valuable information was obtained from spring sowing 
of wheats having a winter habit. These studies were found to be 
necessary to determine accurately the true plant habit of some 
varieties. 
The classification nurseries were sown in short rows, usually not 
exceeding 5 feet in length and a foot or 18 inches apart. Az the sta- 
tions where all varieties were sown both in fall and spring, each 
variety was sown in the spring on one end of the row sown in the 
fall. Plate I shows portions of the classification nursery at Cor- 
vallis, Oreg., in 1919. Figure A of Plate I shows spring wheat fall 
sown and spring sown, the fall-sown portion being on the right and 
the spring-sown portion on the left. Figure B of the same plate 
shows winter wheat spring sown and fall sown in the same manner. 
ASSISTANCE RECEIVED. 
To obtain samples of the different wheat varieties was the first 
important task. This was accomplished with the assistance of many 
individuals and institutions.® . 
The classification nurseries at the various stations usually were 
sown by local representatives.© The local men also took notes on 
5 The writers have obtained samples of seed and cooperation in other ways from officers 
- of the divisions of grain standardization and grain supervision, Bureau of Markets, of the 
U. S. Department of Agriculture. Samples also have been obtained from most of the 
State agricultural experiment stations in the United States and the Dominion Department 
of Agriculture in Canada, and the writers wish here to express thanks to the officers of 
these many institutions who have so kindly assisted in this work. 
6 The writers wish to acknowledge gratefully the cooperation of field men of the Office 
of Cereal Investigations. To Mr. D. E. Stephens, superintendent of the Sherman County 
branch station, at Moro, Oreg., and to Mr. V. H. Florell, assistant agronomist, in charge 
of the cereal investigations at the Plant-Introduction Garden, Chico, Calif., special credit 
is due and is here gladly given. Other station men who have assisted in these studies 
are Mr. F. J. Schneiderhan, formerly scientific assistant, in charge of the cereal-breeding 
nursery at Moro, Oreg.; Mr. L. C. Aicher, superintendent of the Aberdeen substation, 
Aberdeen, Idaho; Mr. J. W. Jones, formerly superintendent of the Nephi substation, 
Nephi, Utah; Mr. N. C. Donaldson, formerly scientific assistant, in charge of the cereal 
experiments at the Judith Basin substation, Moccasin, Mont.; Mr. George A. McMurdo, 
formerly assistant, in charge of the cereal investigations at the Akron Field Station, 
Akron, Colo.; Mr. F. R. Babcock, formerly scientific assistant, in charge of the cereal 
studies at the Williston substation, Williston, N. Dak.; Mr. Ralph W. Smith, assistant 
agronomist, in charge of the cereal experiments at the Dickinson substation, Dickinson, 
N. Dak.; Mr. J. H. Parker, formerly scientific assistant, in charge of the breeding for rust 
resistance in cereals at the University Farm, St. Paul, Minn,; Mr, Louis Wermilskerchen, 
