32 BULLETIN 402, U. S. DEPARTMENT OF AGRICULTURE. 
FLAX. 
Flax has been sown in each of the eight years during which experi- 
ments have been conducted at Akron. In the three years, 1911, 
1914, and 1915, the crop failed. Russian (C. I. No. 19) has been 
grown throughout the 8-year test. The highest yield recorded 
was 13.1 bushels per acre, produced in 1912. Other varieties have 
been grown for shorter periods, but none has proved superior to the 
Russian. The 8-year average yield of this variety is 4.4 bushels 
per acre. 
PROSO. 
Proso, commonly called hog millet or broom-corn millet, has not 
been given a very thorough test. It has been grown in nursery rows 
and smali plats, but continuous field-plat tests have not been made. 
Black Voronezh (C. I. No. 16) or selections from it has been grown 
Fic. 11.—Plat of Black Voronezh proso at the Akron Field Station, with the station buildings in the back- 
ground,in 1915. (From a photograph lent by the Office of Exhibits, U. 8. Department of Agriculture.) 
during five years. A plat of this variety in 1915 is shown in figure 
11. It was first sown in field plats in 1909, when it produced a yield 
of 22.9 bushels per acre. It was again sown in field plats in 1912 
and each of the three years following. The highest yield recorded 
was 36 bushels in 1912. The 5-year average is 23.1 bushels. 
Except possibly. as a catch crop, proso can not be recommended for 
this district. 
GRAIN SORGHUMS. 
Grain sorghums have been grown in field plats for five years. On 
account of the short growing season and cool nights, most varieties 
fail to mature. Manchu Brown kaoliang (C. I. No. 328) is the only 
variety of apparent value in the Akron district. The highest yield 
