80 



COUN CROPS 



Date 



AUTHOBITY 



Number of 

 Varieties 



1779 

 1832 

 1836 

 1853 

 1858 

 1866 

 1884 

 1898 



Bridgman .... 



Bonafous 



U. S. Patent Office Rpt. 

 Ellippert . . : . . 



Burr 



Sturtevant .... 

 Sturtevant .... 



1 



1 



1 



3 



6 



12 



33 



63 



There has been a similar rapid development of dent 

 varieties. 



In 1866 Edward Enfield ^ made a list and description of 

 corn varieties, which he said represented " most of the 

 varieties in use, and all that are likely to be of practical 

 value to the farmer." Of field corns he describes 20 

 varieties, 13 of which were flints, 3 broad-grained dents of 

 12 or 14 rows, 1 flour corn, and 3 gourd seed varieties 

 grown in the South. However, J. S. Leaming had begun 

 selecting " Leaming " corn in 1826 and Mr. Reid began 

 selecting his corn in the late forties. With the rapid de- 

 velopment of corn culture, after the Civil War, the modern 

 dent type came to be generally used throughout the Corn 

 Belt States ; although the flint corns are still the principal 

 corns in the Northern States, where the season is too 

 short for the large dents. 



58. Early methods of modifying varieties. — Probably 

 the means that has been most commonly used in the past 

 was either to hybridize two varieties and select some type 

 from this hybrid for several years until the type was fixed, 



1 Enfield, Edwabd. (1866.) Indian Corn. D. Appleton & Co., New 

 York. 



