THE CALL OF THE HEN. 



55 



FIG. 33 MEASURING THE THICKNESS OF THE PELVIC BONES 

 There is little or no actual difference in the thickness of the pelvic bones in differ- 

 ent hens, but there is a great difference in the apparent thickness, which is produced by 

 the fat underlying the skin and surrounding the bones. The good layer on the reader's 

 left has comparatively little fat and the skin is thin and pliable to that there is 

 a limited amount of tissue between the bone and the finger. In the poor layer on the 

 right, the skin is thick, with a heavy layer of fat underneath, thus making the pelvic 

 bones appear more than twice as thick as hi a good layer. Photo from New Jersey 

 Experiment Station. 



FIG. 61 HIGH AND LOW PRODUCING RHODE ISLAND REDS 

 Posed to show difference in spread of pelvic bones. The high-producing hen is 

 shown on the reader's left in the illustration. Photo from Storrs Experiment Station. 

 Note the large moist vent of the good layer on the left. 



