. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature. iew. X l»i-ui«..l III. — 80 TOG B i R D R [anato:>iy. hatcning, the skull of the chicken is excellent for com-parison; as in Cattle, so in the Fowl and its relations, theiryMing ones are in good liking as soon as they appear ;heiice they are strong in bone and sinew verv early, thegrowth-processes taking place rapidly. The under view (fig. 13) shows, behind the orbits, a strongcranial Synchondroses of the remainder of the chondro-cranium divide the endo-skeletal bone-tcrrjtories ; and thatorgani
. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature. iew. X l»i-ui«..l III. — 80 TOG B i R D R [anato:>iy. hatcning, the skull of the chicken is excellent for com-parison; as in Cattle, so in the Fowl and its relations, theiryMing ones are in good liking as soon as they appear ;heiice they are strong in bone and sinew verv early, thegrowth-processes taking place rapidly. The under view (fig. 13) shows, behind the orbits, a strongcranial Synchondroses of the remainder of the chondro-cranium divide the endo-skeletal bone-tcrrjtories ; and thatorganic attraction which causes the perfect correlation ofthe shallow with the deeper layers of the mesoblast, hasgiven us here bony encasements, that not only fill in whatwas wanting in the chondro-cranium, but also overlie anddouble the strength of the ossified cartilage itself. Allis neat and finished now, and now is the nick of time in. Ae-e. Fio. 14.—Horltonial section of ekiill-base of same Chirk, x 4 dlnnetert. tympanic recess; «t« ettipea; 7, pArtlo moUls pansainf (mfatus m-lernus). which can De seen most oi ine sutures, so soon to beobliterated by the almost universal ankylosis that takes placeafterwards—a process by which Nature, in the Bird, rapidlyfills in nearly all her footprints. Here she is as hard tobind as Proteus himself; and the morphological worker isoften sore bestead to catch all the transformations. If thechick were to retain throughout life its present form offace, it would much resemble a Hemipod. We have seenhow its skull becomes metamorphosed from a lower into ahigher and a still higher type day by day. This basal view shows that the bony pieces of theoccipital arch are fast forming a strong ring, after themanner of a vertebra. The keystone piece (so.) is miwone bone, with the remains of the suture above. Thenotochord still exists in the basal piece (), and is seenin
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