PLATE . 



EPITHELIAL CELLS AND CARTILAGE, SHOWING FORMED MATERIAL IN THE 

 TWO TISSUES RESPECTIVELY AND THE MODE OF ITS FORMATION. 



ie\ 13. 



-' . 



J^'-'^f^ ''~-<&r"t 

 .tt?$-.-$p:n 





)M: "p?^S;tfC|^. 



f i .fcS* / -i-'ftffif :.',! / r i' / ?A' / > . <1LV -^gf/ 



'--'-* 



: 



i : e front of the t^ve) <;f a 



show: ' vl couuuuous aud not, yet 



b mass c 

 i . calls. > 



Superficial or older cells, fron 

 same specnn-n as Fit;. 13, sh' 

 formed material i::eloijfiin to 

 mass of germinal matter, iivini 

 to the ap o: separate or.Ls 



X oOO. 



n 



.*' Of^f- r. 



i^ 





- 



! continuous 



i i. 





I 



I X 



