Facial musculature, nerves and blood vessels of the hamster in relation to the cheek pouch

In the course of investigations on capillary circulation in the internal cheek pouch of the hamster in the laboratories of Boston University and of Arthur D. Little, Inc. (Fulton, Jackson and Lutz, '47), i t was found that more exact knowledge of the anatomy of the musculature, nerves and blood vessels of tlie pouch would be useful. The prcseiit study was accordingly undertaken. Although tlie golden hamster (Mesocricetzcs auratzrs) has been in common use as a laboratory animal for several years, little has been published on its facial anatomv. The work of Parsons (1896) includes a comparison of tlie myology of Cricetus frumevLtarius (C. cricetus), the hamster of Central Europe, with that of other rodents, hut is incomplete in many details. Brandt ( '01) and Roscher ('09) describe tlie relationships of the cheek pouch to tlie lips and vestibulum oris in C. cricefus. Schreibcr ( '29) describes the facial musculature and pouch of C. cr icetus in comparison with other rodents, basing his brief account on dissection of a single juvenile