Fig. 89. Fi sow from cross, Berkshire X Yorkshire, and pi^^s protiuceil Ijy a l>ack-eross with 

 hour. Note 1 : 1 ratio and modified ^pol^tiiiL'. lAftcr W. W. ^tuilh.) 



Berkshire 



Fig. 90. Hampshire sow, typical example of a belted black-and-white breed. 





Fig. 91. Belted red sow. This breed produced by Q. I. Simpson by crossing black belted (Hampshire) 



with self red (Tamworth and Duroc) swine. 



