. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. 290 THE DEVELOPMENT OF THE CHICK the hind-brain and bends in above it towards the middle hne (Fig. 168). The right and left sacci are, however, still separated by a considerable space. The walls of the sacciis already form a large number of low folds, presumably glandular, the first begin- ^ Fig. 168. — Transverse section through the head of a chick embryo of eight days in the region of the ear (photograph). C. a., Anterior semicircular canal. C. h., Horizontal semicircular canal. Caps, aud
. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. 290 THE DEVELOPMENT OF THE CHICK the hind-brain and bends in above it towards the middle hne (Fig. 168). The right and left sacci are, however, still separated by a considerable space. The walls of the sacciis already form a large number of low folds, presumably glandular, the first begin- ^ Fig. 168. — Transverse section through the head of a chick embryo of eight days in the region of the ear (photograph). C. a., Anterior semicircular canal. C. h., Horizontal semicircular canal. Caps, aud., Auditory capsule. Cav. Tymp., Tympanic cavity. Col., Colu- mella. Duct end., Endolymphatic duct. ex. au. M., External auditory meatus. Fis. Tub., Tubal fissure. Lag., Lagena. M. C, Meckel's cartilage. Myel., Myelencephalon. N'ch., Notochord. p'l., Perilymph. Sac, Saccu- lus. Sac. Endolymphatic sac. Tub. Eust., tube. Tymp., Tympanum. Utr., L^triculus. X., Sac derived from the inner extremity of the tympanic cavity. nings of which were visible on the sixth day. The form of the saccus and ductus endolymphaticus at a somewhat later stage is shown in the reconstruction (Fig. 173).. 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 Lillie, Frank Rattray, 1870-1947. New York : Henry Holt
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Keywords: ., bookauthorlilliefrankrat, bookcentury1900, booksubjectembryology
