636 



3889. The tusk of a Walrus. Mm. Brit. 



3890. The tusk of a Walrus. Mus. Brit. 



3891. A small tusk of a Walrus. Mug. Brit. 



3892. The tusk of a Walrus. Mus. Brit. 



3893. The tusk of a Walrus, with a portion of the alveolar process attached. 



Hunterian. 



3894. The tusk of a Walrus. Hunterian. 



3895. The tusk of a Walrus. Hunterian. 



3896. The tusk of a Walrus. Mus. Brit. 



3897. The tusk of a Walrus. Mus. Brit. 



3898. The tusk of a Walrus. Mus. Brit. 



\ 



3899. The tusks of a Walrus. 



From the western coast of North America. TJ f 



3900. A section of the growing tusk of a Walrus. Hunterian. 



3901. Longitudinal sections of the tusk of a Walrus. Hunterian. 



3902. Longitudinal sections of the tusk of a Walrus. Hunterian. 



3903. Transverse sections, deprived of the calcareous salts by acid, of the tusk of a 

 Walrus. Hunterian. 



