. The bird, its form and function. Birds. The Skull 107 large rounded portion taking up most of the skull proper is, of course, the box of bone which protects the brain. On each side, a large cavity shows where the eyes are placed, and if we compare this skull with that of a cat or dog or with that of a human being, we will see what great importance eyes must be to a bird; the cavities for them are so much larger than in other animals. Back 3raii2i Cdse. Fig. —Skull of Fowl, showing orbit, brain-case, ear, lower jaw, premaxillary (Pmx.), maxillary (Mx.), vomer (Vo.), lacrymal (Lc), jugal (
. The bird, its form and function. Birds. The Skull 107 large rounded portion taking up most of the skull proper is, of course, the box of bone which protects the brain. On each side, a large cavity shows where the eyes are placed, and if we compare this skull with that of a cat or dog or with that of a human being, we will see what great importance eyes must be to a bird; the cavities for them are so much larger than in other animals. Back 3raii2i Cdse. Fig. —Skull of Fowl, showing orbit, brain-case, ear, lower jaw, premaxillary (Pmx.), maxillary (Mx.), vomer (Vo.), lacrymal (Lc), jugal (Ju.). palatine (Pal.), pterygoid {.Pig), quadrate (Qd.), and supra (Sup. occ), ex {Ex. occ), and basioccipital bones. (."Vfter Parker.) of each eye-case we see an irregular opening, the portal of the ear; and in front of the brain two apertures in the beak open toward the organ of the nose. The prominent beak and wide-spreading lower jaw are chiefly concerned in the procuring of food. We need not bother with the names of all the bones, but there are some too interest- ing and with too strange a history to be passed l:)y. Let us glance at the back of the skull for a moment. Here we find a large roimd opening through which 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
Size: 2142px × 1167px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1906
