I40 



Our Jhh'D Fr/exds. 



finer ones of their own called barbnles, or, in other 

 woids, miniature barbs, ending in booklets and 

 other hairlike growths of extreme delicacy, which 

 interlock themselves with similar growths from 



lem m such a wav 



barljules to right and left of t 

 as to hold tlie vane, as the parts on either side 

 of a ([uill or shaft are called, finnly together. A 

 certain amount of movement being necessary to 



give free play to 

 the flexible bar- 

 bnles and barbs, 

 thchookletsslide 

 to some extent 

 up and d«»wn in 

 grooves, thus 

 adding to the 

 much - needed 

 elasticity of the 

 feather. 



It bas been 

 calculated liy an 

 eminent scien- 

 tific authority 

 that the tbghl feather of an Kagle contains two 

 thousand barl)S, five and a half million barbnles, 

 and no less than tifty-loui- millions of booklets and 

 other hairlike <]^rowths, which arc so very tin^■ that 

 they only measure about one-thousandth part of an 

 inch in length. 



Chicks are first of all supplied with a coat of 



YOING COMMON (JILLS '/>. 111). 



