262 D. F. JONES. 



Each mixture is given a number and the seed characters of the 

 materials used and their pedigree numbers are given in Table I. 

 The first number in the pedigree designates the variety from 

 which the inbred strains were derived. The following numbers 

 indicate the progenitors in the successive self-fertilized genera- 

 tions. The total number of units in the pedigree number less 

 one, show the number of generations the material had been 

 self-fertilized at the time the pollinations were made. The inbred 

 strains used in these experiments are as follows : 



i. Several distinct strains from a yellow dent variety originally 

 obtained in Illinois and known as Chester's Learning, self- 

 fertilized ten or more years. 



10. A strain with white floury seeds with no traces of corneous 

 starch, self-fertilized nine generations. 



14. Two distinct strains from a yellow dent variety from Con- 

 necticut known as Stadtmueller's Learning, selected for high 

 protein content during six generations of self-fertilization. 



20. Two distinct strains from a white dent variety originally 

 selected for high protein at the Illinois Exper. Station and further 

 selected during four generations of self-fertilization. 



21. One strain from same source as above but selected for low 

 protein in field pollinated cultures and during five generations of 

 self-fertilization. 



65. A small, white, round-seeded strain from a variety of pop- 

 corn, Zea mays everta, self-fertilized ten times and characterized 

 by clear corneous starch. 



76. Two similar strains from a sweet variety of latent flint 

 type having purple aleurone and known as Black Mexican, 

 self-fertilized four years. 



77. From a sweet variety of latent dent type with deeply 

 wrinkled white seeds known as Evergreen and self-fertilized four 

 generations. 



126. From a small, early maturing, yellow, sweet variety of 

 latent flint type with dark yellow kernels, known as Golden 

 Bantam, and self-fertilized three generations. 



117. From a variety of popcorn with sharp pointed seeds 

 having clear corneous endosperm, self-fertilized three times. 



146. From a yellow, sweet variety, Golden Bantam, of different 



