30 THE SOY BEAN ; HISTOEY, VARIETIES, AND FIELD STUDIES. 



From these data it would appear that the Buckshot is a common 

 Japanese variety. But Mr. E. E. Evans, West Branch, Mich., 

 claims that this variety was originated by him in 1901 as a hybrid, 

 "Evans's Crossbred No. 6," which he advertised in 1902 and dis- 

 tributed widely. In recent correspondence Mr. Evans states that 

 this was a hybrid of a large, flat, black variety, Medium Early Black, 

 and of the Dwarf Brown. According to Mr. Ball, No. 6334 and 

 its progeny numbers were identical with Evans's variety. In 

 Mr. H. T. Nielsen's opinion, Nos. 19987 and 22883 were also pre- 

 cisely identical. Unfortunately, these three Japanese lots were 

 not gro\vn in 1909. A critical comparison of the seed samples 

 shows, however, that the three Japanese lots have thicker, more 

 nearly globose seeds than most of the lots derived from Evans's 

 plant. It is, therefore, not unlikely that there are really two closely 

 similar but distinct varieties involved, a matter which needs further 

 investigation. 



Nos. 22322 and 25212 A are undoubtedly the same as Evans's plant. 



GUELPH, OR MEDIUM GREEN. 



Guelph, or Medium Green, was introduced by Prof. W. P. Brooks, 

 in 1889, from Japan, and is now quite extensively grown in the 

 Northern States. The same variety was also obtained from Hankow, 

 China, in May, 1901— S. P. I. No. 6558, according to Ball's identifi- 

 cation.« It has since been received from only one foreign source, 

 namely, S. P. I. No. 22320, from Haage & Schmidt, as "Green 

 Samarow." This last might easily be the progeny of the American 

 introduction. 



BUTTERBALL. 



The Butterball variety was first secured from the Rhode Island 

 Agricultural Experiment Station in 1903 as "Early Japm," and 

 it is probably one of Professor Brooks's introductions. According 

 to Ball,'' S. P. I. No. 8422, from Yokohama, Japan, is identical. 

 A recent culture of this number obtained after a lapse of several 

 years from the Illinois Agricultural Experiment Station, through 

 Mr. H. B. Derr, proved to be Butterball, but there were a few differ- 

 ent things intermixed, probably hybrids. A recent lot of seed 

 from Dammann & Co., Naples, Italy, S. P. I. No. 22415, received as 

 "Giant Yellow," is undoubtedly Butterball. 



a Bulletin 98, Bureau of Plant Industry, p. 21. 

 b Bulletin 98, Bureau of Plant Industry, p. 25. 

 197 



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