. The bird, its form and function. Birds. 1 o6 The Bird few thousand years during which man has reigned seems but a day. When we study the early structure of some creature, say a bird, we find that before it emerges from the egg the skull is soft and cartilaginous, open and quite differ- ent in shape from what it will be eventually, and it is most startling to find a living creature—a shark—with. Fig. 82.—Skull of Bald Eagle. Bones light and spongy, fitting for a very active aerial life; orbit very large and hrain-case capacious, showing great advance beyond reptilian condition. a skull which
. The bird, its form and function. Birds. 1 o6 The Bird few thousand years during which man has reigned seems but a day. When we study the early structure of some creature, say a bird, we find that before it emerges from the egg the skull is soft and cartilaginous, open and quite differ- ent in shape from what it will be eventually, and it is most startling to find a living creature—a shark—with. Fig. 82.—Skull of Bald Eagle. Bones light and spongy, fitting for a very active aerial life; orbit very large and hrain-case capacious, showing great advance beyond reptilian condition. a skull which never gets beyond this condition. It is as if the curtain of eternity had been, for a moment, drawn aside for us, and a glimpse given into the past—a past so remote and clouded that our keenest searches seem to reveal but dim, skeletal forms of weird shapes, which yet we know must have blended and imperceptibly merged, through millions of years, into the present life of the earth. Looking at the chicken's skull as a whole, we notice a number of uses which the various parts serve. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Beebe, William, 1877-1962. New York, Holt
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1906
