Prof. Owen on the Class Mammalia. 195 
and the prepuce has a frenum. The mamma are pectoral, 
Sn placenta is a single, subcireular, cellulo-vascular, discoid 
Y. 
Man has only a partial covering of hair, which is. not merely 
Reciye of the head, but is ornamental and distinctive of sex, 
he dentition of the genus Homo is reduced to thirty-two teeth 
by the suppression of the outer incisor and the first two premo- 
_lars of the typical series on each side of both jaws, the dental 
formula being :— 
bina oe Eee g ie 
Sp Gy pt m C= oe, 
e 
€ human foot is road, plantigrade, with the sole, not in- 
verted as in Quadrumana, but applied flat to the ground; the 
leg bears vertically on the foot; the heel is expanded beneath ; 
the toes are ort, but with the innermost longer and much 
larger than the rest, forming a ‘hallux’ or great toe, which is 
Placed on the same line with, and cannot be opposed to, the 
other toes; the pelvis is short, broad and wide, keeping well 
apart the thighs; and the neck of the femur is long, and forms 
a0 open angle with the shaft, increasing the basis of support for 
the trunk, The whole vertebral column, with its slight alter- 
Position, The widely-separated shoulders, with broad scapulee 
and complete clavicles, give a favorable position to the upper 
limbs, now liberated from the service of locomotion, with com- 
Plex Joints for rotary as well as flexile movements, and termin- 
ated by a hand of matchless-perfection of structure, the fit instru- 
ein for executing the behests of a rational intelligence and a 
free will 
Tival all native vestments in warmth and beauty; though de- 
ess 
and become the ‘e on f 
: most. terribly destructive of animals. 
‘quis his destiny as the supreme master of this earth, and of 
® lower Creation. ; 
Tn these endeavors. to comprehend how Nature has 3 oe 
ee her mammalian forms, the weary student quits if i 
4 conviction that, after all, he has been rewarded with but 
al imperfect view of such natural association. The rer 
tad 88 existed, probably from the triassic, certainly from the 
forms a litie period; and has changed its generic and specific 
