258 
Fig. 
Fig. 
Hig. 
Big. 
Fig. 
Fig. 
Fig. 
TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
1f 
8. 
10. 
11. 
(eee 
Oe 1s 
ig. 14. 
1, 15), 
ig. 16. 
leie 
Tus), 
Section through part of the body passing through 
the anterior part of the renal organ parallel to 
the branchial filaments. »X 12 diam. 
Blood corpuscles from one of the branchial 
vessels. Zeiss apo. 1°5, compens. oc. 4. 
Transverse section through a renal tubule. xX 
500 diam. 
The left valve of the shell, seen from the inside. 
Nat. size. | 
Prams dole 
Section through the middle part of the proximal 
limb of the viscero-pedal mass, transverse to 
the axis of the latter, and in the horizontal 
plane of the body. xX 7 diam. 
Transverse section through the straight portion 
of the intestine. X about 50 diam. 
Transverse section through the spiral portion of 
the intestine.  X 50 diam. 
Transverse section of the rectum near the anus. 
x 50. 
Section through part of the digestive gland, 
showing the transition from ciliated to glandu- 
Jar epithelium. X 50 diam. 
Transverse section of a secreting alveolus from — 
the digestive gland. Zeiss apo. 1°5, compens. 
oc. 4. 
Transverse section of part of a bile duct. xX 
500 diam. 
Vertical section through part of the stomach 
wall. x 280 diam. | 
