Eyelids, Viewed from the Front
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The eyelids viewed from before; a,a, the lachrymal canals; b, the lachrymal sack. The lachrymal sac is a bag of an oval shape, fixed to the end of the double canal, and lies in a depression of the nasal bones. It terminates in the tube called the duct, which passes through a hole made for it, in the bones of the nose, and opens into the nostril.
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Human Sensory Systems: SightSource
Lee, Charles A. Human Physiology for the Use of Elementary Schools, 11th ed. (Buffalo: J. C. Derby & Co., 1847) 222
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