. Animal and vegetable physiology, considered with reference to natural theology, by Peter Mark Roget ... Biology; Physiology; Plant physiology; Natural theology. SMELL. 401 great an extent of surface as possible within the confined space of the nasal cavity. This. turbinated, or spiral shape, chiefly characterises these bones among herbivorous quadrupeds: in the horse, for example, the turbinated bones are of a large diameter, and extend the whole length of the prolonged nostrils. Their structure is exceedingly intricate; for while they retain externally the general shape of an oblong spiral
. Animal and vegetable physiology, considered with reference to natural theology, by Peter Mark Roget ... Biology; Physiology; Plant physiology; Natural theology. SMELL. 401 great an extent of surface as possible within the confined space of the nasal cavity. This. turbinated, or spiral shape, chiefly characterises these bones among herbivorous quadrupeds: in the horse, for example, the turbinated bones are of a large diameter, and extend the whole length of the prolonged nostrils. Their structure is exceedingly intricate; for while they retain externally the general shape of an oblong spiral shell, they are pierced on all their internal sides with numerous perforations, through which the membrane, together with the fine branches of the nerves, passes freely from one side to the other. The cavities resulting: from the convolutions are intersected by un- perforated partitions of extraordinary tenuity, serving both to support the arches of bone, and VOL. II. D D i. 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 Roget, Peter Mark, 1779-1869. London : W. Pickering
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