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SCIENTIFIC SUMMARY. 
ANTHROPOLOGY. 
)RPHOLOGY of the Human Teeth. — Dr. E. Lambert, of Brussels, 
after a careful study of the characters of the teeth in the different 
races of man, has formulated the important conclusions at which he arrives 
as follows : — 
In the white race the triturating surface of the canines does not project 
"beyond that of the other teeth ; the two premolars are of equal volume ; 
the first true molar is the largest ; and the last, or “ wisdom-tooth,” the 
smallest. 
In the black race all these peculiarities are reversed ; the canines project 
beyond the adjoining teeth, the posterior premolar is larger than its fellow, 
and the true molars increase in size backwards. 
In the white race the molars usually have only four cusps ; in the black, 
Jive. If in the white race there are five, it is the first molar that has them ; 
in the black race it is the last. 
In the yellow race there is usually, as in the black, a slight increase in 
the size of the true molars from front to back, and there is a fifth cusp on 
the hindmost molar. 
In the black race the incisors are larger in diameter than in the white, 
and the triturating surface of the canines is larger than in the adjoining 
outer, as in the Anthropoid apes. The first lower premolar, also, has often 
a feebly developed inner tubercle, which is another slight manifestation of 
resemblance to the apes. 
In the black race the upper molars have the antero-posterior diameter 
equal to the bilateral ; in the white it is always smaller, whilst the yellow 
race show an intermediate form. 
There is more difference in the teeth between the black and yellow races 
than between the yellow and white ; but the Malay branch, the type of the 
brown race of D’Omalius, seems to be transitional between the black and 
yellow with respect to the general volume of the teeth, the number of cusps 
of the large lower molars, and the tendency to increase of size in the molars 
posteriorly. 
The American race, the red race of D’Omalius, which is usually united 
with the yellow, presents so nearly the same dentary characters as the black 
teeth. 
In the black race there is a slight diastema, which does not exist in the 
white, and the inner tubercle of the premolar is less developed than the 
