PHYSETER MACROCEPHALUS. 



525 



tooth. '* Satisfactory evidence of the existence of the 

 Cachalot in the present seas of Britain, is given by Pro- 

 fessor Bell, in his ' History of British Quadrupeds and 

 Whales, 1 p. 503. 



* Odontography, p. 353, pis. 89, 90. 

 Fig. 218 



Longitudinal section of a recent tooth of the Cachalot, nat. size. 



Fig. 219. 



Longitudinal section of a fossil physeteroid tooth from the Red Crag, Felixstow. 



