PLATE VII. 



JAKTILAGE SHOWING MODE OF PRODUCTION OF FORMED MATERIAL. 

 Fig. 1. 



m 



Cartilage, frog : showin 

 material 



X 1800 



Fig. 4. 



Oartilafte at diS'ereut ages. a. Kitten at birth ; 

 6, s:x weeks old: c, nearly full grown; d, adult 

 cat. x 215. Showing alteration in the relative 



material at different ages. X 'J15. 



Cartilage, frog, showing bioplasm about 

 undergo conversion into formed material. 



' Fig. 7 



E 



These figures show the actual conversion of the bioplamn of cartilage into the formed material n 



-] iliissue. In 6 aud 7 a piece of cartilage has been formed in the very centre of the bioplasm 



Whattt represented -*n these figures as formed material aud lifeless, was, a short time previcusb- 



living bioplasm a-^ in fig. 6. x '00. 



ii'o-o o f an inch _ 



700. 



[To face page 22,, 



