3-4 BULLETIN 336, U. S. DEPARTMENT OF AGRICULTURE. 
vigorous, the stems are more slender, and the heads and kernels are 
both smaller. The kernels are yellow in color and usually quite well 
developed. 
Ivancf. — The Ivanoi rye, C. I. No. 34, was introduced into this 
country from Russia by Prof. N. E. Hansen in 1898. In general 
appearance and plant characters it is practically the same as the 
Mexican. 
Rimpau. — The Rimpau rye, C. I. No. 126, was introduced from 
Germany in 1910. The seed was purchased from Mr. W. Rimpau, 
a noted German cereal breeder, Schlansted, Saxony, and was known 
as ''Old Breeding." It is a rather more distinct variety than any of 
those previously mentioned. It is decidedly the latest maturing rye 
included in the tests at Arlington. The leaves are much broader 
than those of other varieties. Because of this character it is more 
frequently recommended than others where a hay variety is desired. 
The heads are drooping, very large, nearly square, and are borne upon 
a large but not very stiff straw. The kernels are medium long, broad, 
shrunken, and blue in color. The quality of grain in the Rimpau 
variety is inferior to that of any other included in the trials at Arling- 
ton. The shrunken condition of the kernel is apparently due more 
to an inherent characteristic of the variety than to environment. 
The Rimpau selection is a pure line of this variety which was 
selected at Arlington Farm with the intention of improving the qual- 
ity of grain, although no marked improvement was effected. The 
straw of this particular strain was quite weak, and for this reason it 
was discontinued. 
Henry. — The original source of the Henry rye, C. I. No. 138, is not 
known. This rye when pure is quite different in appearance from any 
other here discussed and it usually can be identified readily. The 
heads are short and very broad at the base, giving them a spear-shaped 
appearance. The kernels are quite similar to those of the Abruzzes, 
except that they are a little lighter brown in color. In yield the 
Henry rye has been less satisfactory than the Giant or Virginia 
Winter. 
EXPERIMENTS WITH WINTER OATS. 
Fall-sown oats succeed much better than spring oats in southern 
and eastern Maryland and in Virginia east of the Blue Ridge. Spring- 
sown oats give fairly good results in particularly favorable seasons, 
but the crop is not at all a reliable one. Therefore, most of the ex- 
perimental work that has been done at College Park and Arlington 
Farm with oats has been with fall-sown varieties. 
Varietal tests of winter oats have been conducted in field plats at 
College Park since 1908 and at Arlington Farm since 1911. Prior to 
1911 this crop was grown only in the nursery at Arlington Farm. 
The trials at College Park during the seven years have included 13 
