PROGRESSIVE POULTRY CULTURE 35 



extreme other functions are liable to become impaired. 

 The different parts of the bird's body are not indepen- 

 dent of each other. There is an interdependence a re- 

 lationship together among the body-organs. This is ex- 

 pressed as Correlation of Parts. Strict attention to this 

 fact is necessary in order to sustain the proper balance 

 of the parts and maintain a natural, healthy co-opera- 

 tion of the functions of the fowl. 



The correlations of the different parts of the body 

 are not equal. Certain organs are more closely related 

 together than others. The dependence of the organs of 

 blood circulation upon the digestive system is evident 

 and the relation of the blood circulation to all the 

 parts of the body in their process of growth, repair 

 and production need not be emphasized. There are also 

 correlations which, if carefully studied out by the poul- 

 tryman, enable him to judge of certain inward parts 

 or functions by the appearance of correlated outward 

 or visible parts. The most common illustration of this 

 fact is found in the striking fullness and redness of 

 the combs and. wattles of a cockerel in the full exercise 

 of his powers during the breeding season as compared 

 with the head appendages of a capon. The shrunken, 

 insignificant, pale comb of the caponized bird testifies 

 to the loss of breeding power in a very decided man- 

 ner. Much the same difference of appearance is noticed 

 between a pullet that is laying well and a hen that is 

 in the molt. 



The poultryman who would team at first hand, all 

 that he can of the correlations of parts in fowls, will 

 scrutinize frequently the outward appearance of his 

 birds and whenever he kills a fowl will observe the 

 appearance of the internal parts as to size, develop- 

 ment and condition. Studying thus the organs them- 

 selves and searching out their relationships he will come 

 to know from the outward conditions what are the in- 

 ward conditions of his birds both in health and dis- 

 ease. 



Variation. Although we try to breed our birds to 

 a standard type and strive to get them as like as peas 



