CHAP. V[[.] 



THE CONNECTIVE TISSUES. 



293 



Grusta Petrosa or Cement. 



The cementum, or crusta petrosa, is found as a thin covering 

 over the dentine of the fangs and is developed from the periosteum 



COMPARATIVE ANALYSIS OF TEETH AND PAETS OF TEETH OF VARIOUS 

 ANIMALS (VON BIBRA l ). 



1 Reprinted from Watts' Dictionary, Vol. v., p. 706. 



