. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Embryology &c. o/Yoldia limatula, Say. 271 tip the ventral tube, vt, winch opens to the exterior through the blastopore, bl^ and is continuous with the mid-gut, mg. Fig. Reconstruction of an embryo of one hundred and five hours; cilia indi- cated only at the margins, aa, anterior adductor muscle; ac, apical cilia ; hi, blastopore; eg, cerebral ganglia ; /, foot; II, left liver-lobe; vig, mid-gut; ot, otocyst; pa, posterior adductor muscle; pg, pedal ganglion; r, pouch
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Embryology &c. o/Yoldia limatula, Say. 271 tip the ventral tube, vt, winch opens to the exterior through the blastopore, bl^ and is continuous with the mid-gut, mg. Fig. Reconstruction of an embryo of one hundred and five hours; cilia indi- cated only at the margins, aa, anterior adductor muscle; ac, apical cilia ; hi, blastopore; eg, cerebral ganglia ; /, foot; II, left liver-lobe; vig, mid-gut; ot, otocyst; pa, posterior adductor muscle; pg, pedal ganglion; r, pouch extending from the cerebral ganglia to the exterior; s, shell; t, test; vg, visceral ganglion; vt, ventral tube. The embryo at this stage has acquired an anus, which has broken through into the upper part of the blastopore. 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 London, Taylor and Francis, Ltd
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
