174 EVOLUTION OF LIFE. 
stage of development. They also frequently stand in 
reciprocal dependence; one character determines the 
other, according to the law of harmony or coexistence which 
governs the form of all living bodies. With the flying 
forehead, we find, as a rule, a projecting jaw, large teeth, 
a high temporal line, a strongly developed occipital ridge, 
simple cranial sutures, small cranial capacity." Mr. Carter 
Blake, in describing the jaw of La Naulette (Fig. 202), so 
called from being found in the hole of the same name, 
says, “Its undoubted resemblance to the jaw of a young 
ape I shall not venture to deny.” In speaking of the molar 
teeth we stated that they were of equal size in the lower 
races of man, but that the last molar was the largest in the 
milk teeth of man and in the adult Chimpanzee. In reference 
to these facts, the jaw of La Naulette is extremely interest- 
ing, since its last molar is the largest, agreeing in this 
respect with that of the Chimpanzee and milk teeth of 
an; the tooth also exhibits the remarkable peculiarity 
of having five roots, as is the case with the last molar of 
the Gorilla and Orang. Further, in the great size of the 
canine teeth, and the absence of the chin, the jaw of La 
Naulette resembles in a marked degree that of the Chim- 
panzee. An important distinction between the molar and 
premolar teeth in man is that the molar teeth have three 
roots, while the premolars have only two; buta very ancient 
human skull found at Olmutz exhibits, according to Schaff- 
hausen, the peculiarity of the second premolar having 
= 
three roots, as is the case in the premolars of the Apes. 
According to the same author, this is also seen in two 
human skulls belonging to the Gottingen collection. In 
comparing the human bones and cranium brought from the 
cave of Neanderthal with other specimens, Prof. Schaffhausen 
says they “exceed all the rest in those peculiarities of con- 
formation which lead to the conclusion of their belonging 
to a barbarous and savage race," and at the conclusion of 
man, was 
comparin 
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