CEMENT 



295 



FIG. 189. Similar to fig. 188. Laminae of the cement 

 (human). ( x 150.) 



d 



FIG. 190. Dentine cement and bone in situ. Lacunae are visible in 

 the cement, b. Bone; c. cement ; p. periodontal membrane ; d. dentine. 



(x80.) 



