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INTRODUCTION. 5
comparative anatomy standpoint, the nomenclature of compara-
tive anatomy, which is suited to the description of the teeth of
animals in general, should be used. In that nomenclature we do
not speak of buccal and lingual surfaces of teeth but of inner
and outer sui-faces, the bicuspids in dental nomenclature become
premolars in comparative dental anatomy. While there are
points of coincidence in these nomenclatures, there are wide
differences that could not be reconciled without positive injury
to both.
