. Elementary anatomy and physiology : for colleges, academies, and other schools . in two pieces. In nearly all the orders of mammalia this bone (the frontal) is always found in two pieces. In the Elephant the bones of the cranium are all united into one at an early period in life, forming but one piece, in order probably to make it sufficiently strong to support the great weight which i3 brought upon these bones by the tusks and proboscis. The Styloid process of the temporal bone is usually in mammals a separate ossicle. The bone which contains the organ of hearing in all mammals, except man
. Elementary anatomy and physiology : for colleges, academies, and other schools . in two pieces. In nearly all the orders of mammalia this bone (the frontal) is always found in two pieces. In the Elephant the bones of the cranium are all united into one at an early period in life, forming but one piece, in order probably to make it sufficiently strong to support the great weight which i3 brought upon these bones by the tusks and proboscis. The Styloid process of the temporal bone is usually in mammals a separate ossicle. The bone which contains the organ of hearing in all mammals, except man and the Apes, is a separate bone called the Tympanic, and is not simply the petrous portion of the temporal as in man. 196. Bones of Face, Intermaxillaries, Lower Jaw.— In the Face too the bones correspond very nearly with those in man. The essential difference is found in the upper jaw. Instead of the two superior maxillaries meeting each other on the median line of the body in front, there are two other bones between them called the Intermaxillaries. These are very conspicuous in animals provided with large canine teeth, or tusks, as the Elephant and Squirrel. The Lower Jaw in What peculiarity about the bones of the Elephant's skull ? Wrhat bone Is wanting in the Whale ? Describe the Tympanic Bone. 196. In what respect do the bones of tho face in Mammals differ from those in man ? Where are the Intermaxillaries ?
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