. Guide leaflet. ls. The brain is proportionately larger in the mammals than in othervertebrates by reason of enlargement of the fore brain or cerebrum. It isthis part of the brain which accounts for the greater intelligence of themammals and which is proportionately larger in man than in most otheranimals. The skulls of mammals have the brain case comparatively largerthan the skulls of other vertebrates, except certain birds which is anaccommodation to increased brain size. The roof of the skull is simplified BIOLOGY OF MAMMALS 5 by the loss of a number of bones found in more primitive vert(l
. Guide leaflet. ls. The brain is proportionately larger in the mammals than in othervertebrates by reason of enlargement of the fore brain or cerebrum. It isthis part of the brain which accounts for the greater intelligence of themammals and which is proportionately larger in man than in most otheranimals. The skulls of mammals have the brain case comparatively largerthan the skulls of other vertebrates, except certain birds which is anaccommodation to increased brain size. The roof of the skull is simplified BIOLOGY OF MAMMALS 5 by the loss of a number of bones found in more primitive vert(l)nit(! the mandible or lower jaw has had the number of bones re-duced to one. In mammals there has developed a secondary bony palate in theroof of the mouth. The skull is hinged on the vertebral column by a pairof condyles in contrast to the single condyle of reptiles. Mammals have three minute bones in the inner ear which are notrepresented as such in other vertebrates. The history of these bones has,. THE BRAIN CAVITY OF A REPTILE SKULL
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
