JOURNAL OF MICROSCOPICAL SCIENCE. 
DESCRIPTION OF PLATE VII, 
Illustrating Mr. Lankester’s paper on the Earthworm. 
Fig. 
ae huryns. with radiating muscular fibres, opened so as to show the 
loose interior fold or pouch. 
2.—Structure of esophageal glands. 
3.—Muscular fibre from pharynx. 
4.—The three pairs of cesophageal glands. 
5,—Earthworm opened by a dorsal incision, the transverse muscles par- 
tially removed. 
a. Cephalic ganglia. 
6. Muscular pharynx, with attaching fibres. 
ce. Ciliated tubules (segment-organs). 
d. Enlarged lateral blood-vessels. 
e. (sophagus. 
Sf, g, i» Male organs of reproduction. 
i. Gsophageal glands. 
k. Crop. 
l. Fibrous stomach or gizzard. 
m. Intestine. 
6.—Alimentary canal, removed from the other viscera. 
7.—Sete, natural size 3th of an inch. 
8,—Seven segments from the lower part of the body, showing the sets 
natural size ird of an inch. 
9.—First, second, third, and fourth segments. 
10.—Crystalline body from the anterior pair of esophageal pouches. 
11.—Integument of earthworm, all viscera being removed. a a. Dorsal 
muscle. cc. Lateral muscles. ¢e. Ventral muscle. / Neural 
canal. 4&4, Lateral setigerous glands. dd. Ventral setigerous 
glands. 
12.—Transverse section of integument. «. Internal epithelial layer. 
b. Parasitic nematoid. ¢. Muscular layer. d. Pigmentary vascular 
layer. e. Epidermis. 
13.—Cells from the hepatic membrane of the intestines. 
