2323 POULTRY BREEDING 
has been drawn from one published several years ago by 
I. K. Felch, the veteran Light Brahma breeder. In this 
chart the solid black circles and segments represent the 
blood elements, and the solid lines that a male has been 
chosen from the group from which they start. The white 
circles and segments represent the female blood elements 
and the dotted lines that the females had been chosen 
LINE BREEDING © CHART GENERATIONS 
‘id 
TALE LINE FErALE LIME 
a 
The Pierce Line-Breeding Chart. 
from the group from which they start. The shaded circle 
represents a scheme for the admission of new blood. 
Suppose we have two extra good birds which when mated 
together produce high-class offspring. Then the problem 
is how to perpetuate the quality of the parents and off- 
spring without the dangers of close inbreeding or of 
destroying the results of several years of work by violent 
out-crossing. By following line-breeding three blood- 
