474 



2668. The skull of a young Elephant. 



The right deciduous tusk, and the germs of both permanent tusks, have been preserved. 

 The second molars are in place, of which seven plates were in use ; the eighth is covered with 

 cement. The germ of the third molar has been removed from the left side of the upper jaw ; 

 its fore part is exposed in the right side. The length of this skull is 13 inches. 



Hunterian. 



2669. The right ramus of the lower jaw of a young Elephant. 



The common dentinal base of the last three plates of the second molar, with the remnant 

 of a long and much-absorbed fang, is retained, and the third molar is in place with nine of 

 its plates worn by use : behind this is seen the gubernacular orifice leading to the otherwise 

 closed alveolus of the fourth molar. 



Hunterian. 



2670. The lower jaw of a young Asiatic Elephant. 



The third molars are in place, of which eleven plates have come into use : behind them are 

 large gubernacular orifices leading to the formative alveoli of the fourth molars. 



Hunterian. 



2671. The right ramus of the lower jaw of an older Elephant. 



The last nine plates remain of the molar in use, and the first six of the succeeding molar 

 are visible through the enlarging aperture of its formative socket. The rounded and inflected 

 angle, the lofty condyloid process, the wide entry to the dental canal, the dense structure of 

 the back part of the short and thick symphysis, are characters worthy of notice in the lower 

 jaw of the Elephant. 



Hunterian. 



2672. The lower jaw of a somewhat older Elephant. 



The antepenultimate molar is in place, of which the first eleven plates have come into use : 

 behind these is the gubernacular orifice leading to the formative alveolus of the penultimate 

 molar. 



Hunterian. 



2673. The lower jaw of a somewhat older Elephant. 



The last eleven plates, and the common dentinal base of some anterior ones, are exposed in 

 the antepenultimate molar, and the first six plates of the penultimate molar are visible through 

 the enlarging orifices of the socket. 



Hunterian. 



2674. A similar-sized lower jaw of an Elephant. 



The last ten plates of the antepenultimate molar are abraded, and the summits of five plates 

 of the penultimate molar are exposed. 



Hunterian. 



