THE SEA SNAIL. via | 
not be opened out. Cut out the penis and examine. 
Its point is notched. Lay the albumen gland with 
portions of the hermaphrodite duct and vas deferens 
on a glass slide, and spread out with a brush. On 
the duct, near where it enters the gland, a small 
pyziform cecum will be found. Examine with the 
microscope both portions of the albumen gland, the 
vas deferens, and the glands of the penis. Examine 
that portion of the mantle that formed the roof of 
the pulmonary chamber. On the outside a granular 
looking patch will be seen. Cut this out and 
examine. ‘The round bodies are egg capsules. Some 
may be found containing embryos. Examine these 
carefully. 
Note.—Throughout the tissues of this animal lenticular concretions 
of calcium carbonate will be found. They readily dissolve in acid. 
