108 
m 2 or m 3 ) by the suppression of 1 and 3 (sometimes present as 
a mere rudiment) and the depression of 4 and 5 to the same 
level as 6. 
dp 3 has perhaps preserved a primitive character in the faet 
that 4 is more nearly connected with 5 than with 1, as it is also 
in the creodont teeth; but there is no genetic relation between 
them, dp 3 belonging to another tooth-generation which on the whole 
has kept many primitive features. But this and some other closely 
related questions I hope to elucidate in a paper under preparation 
concerning the milk-teeth of the Carnivora. 
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