Alt — Glandular Structures Appertaining to the Human Eye. 207 



Plate LII. — 60, Horizontal section through the right lower eyelid (A) and 

 the tissue at the side of the nose. The lacrymal sac at B. 



Plate LIII. — 61, the walls of the lacrymal sac, showing the cylindrical 

 epithelium and lymphatic infiltration, under a high magnifying power. — 62, 

 Acinous glands in the wall of the lacrymal sac at A. 



Plate LIV. — 63, Similar section to Fig. 62. — 64, Acinous gland of the 

 lacrymal sac. The sac begins to the right downwards; the gland seems to 

 lie some distance from it. 



PlaLe LV. — 65, Another such acinous gland, with an oblique section 

 through its excretory duct. — 66, Several acini of such a gland from the wall 

 of a lacrymal sac, under a high magnifying power. 



Plate LVI. — 67, 68, Glands in the wall of a lacrymal sac which have a 

 more tubular structure. 



Plate LVII. — 69, Schematic section through both eyelids and eyeball near 

 the nasal canthus. — 70, Schematic section through the middle line of both 

 eyelids and eyeball. — 71, Schematic section through both eyelids and eye- 

 ball near the temporal canthus. 



Issued July 12, 1900. 



