Constitutional \"i(;or in Poultry Breeding. 



6iq 



and broad, while in the physically weak it is more likely to be long, flat 

 and thin, with long, flat beak, producing a " crow-headed " appearance. 

 Fig. 2, B and F and Figs, i, 4 and 8 show this type. 



Fig. 12. — The two flocks of fall selected pullets used in experiment No. 2. Photograph 

 taken soon after they were placed in winter-quarters. Group A, strong; group B, 

 weak. Note the differences in type of body, size of comb, shape of head, etc. From 

 these two pens were hatched the pullets shown in Figure 13. 



A strong fowl, especially during the laying period, should have a 

 msdium to large, bright red comb and wattles. Fig. 2, C and D, Fig. 3, 



