PROFESSOR T. WHARTON JONES ON THE CAUDAL HEART OF THE EEL. 683 
the smaller tributary caudal venous trunk (into which the heart opens) at each 
diastole, and are propelled along in the great caudal venous trunk at each 
systole of the heart*. 
B. The caudal venous trunk. 
C. The larger tributary caudal venous trunk. 
D. The smaller tributary caudal venous trunk. 
E. The caudal heart opening into the smaller tributary caudal venous 
trunk. 
F F F. The lymph-stream from the heart, and its course along the great 
caudal vein. 
G G G. The drops of blood or agglomerations of red corpuscles as propelled 
along in the lymph-stream. 
* The phenomenon which it is here attempted to represent can properly he seen only in time and space. 
MDCCCLXVIII, 
5 A 
