Outlines of comparative physiology touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges . is spread. It is through the horizontal cribriform plate of theethmoid bone, which separates the nasal cavity from that of theskull, that the olfactory nerves proceed into the nasal fossae BONES OF THE SKULL. 123 (13); this plate, being pierced with numerous holes for theirtransit; the cavity of the nose is further increased by commu-Fig. 94. Fig. 95.

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1870