238 DENTALIAD#. 
it cannot be well seen from the dorsal area, but in transparent 
individuals may often be observed in the pericardium from the 
ventral surface, without dissection, between the bases of the 
stomach and branchie. 
The following remarks give a more correct view of the 
character of the liver. The real liver —not my branchie, 
which M. Deshayes states to be the liver — consists of two 
symmetrical subcentral masses, one on each side, formed of 
10-15 subrotund, pale to dark brown granular lobes, and 
of each group the biliary duct can be observed to pierce 
the peritoneum. With regard to the salivary glands — 
M. Deshayes’ branchize — I have again examined them, and 
traced their pedicles and ducts to spring on each side of 
the cesophagus at its junction with the stomach, and, as I 
think, supply the buccal pouch with a lubricating secretion 
to assist deglutition. I can discover no connection between 
the heart and these organs. All examples show that the 
foraminiferous fecal spoil is discharged anteriorly, and I 
think that there can be no question of the entry of the bran- 
chial water by the posterior canal, which, with M. Deshayes, 
is the anal conduit. As a positive proof of this arrangement, 
I repeat, in confirmation of my former statement, that im 
many young delicate pellucid individuals, I have both by sun 
and artificial light seen the water, in whatever position the 
shell is held, ascend and descend in the tube for the aération 
of the blood, by alternate contraction and dilatation; in fresh 
animals the inspirations and expirations are, each, 5-8 na 
minute, or together 10-16; but when they have been kept 
some days and suffered from want of food, the times of the 
two actions are more irregular and fewer; and still more so 
when the water has become effete, by the animal bemg long 
detained under examination: these processes can be observed 
for many days until nature is exhausted. I submit that these 
are strong reasons in support of the posterior admission of the 
branchial water, and that what has been called the anal issue 
is undoubtedly the aquiferous canal. J again beg to impress 
on zoologists, that no organ of simple depuration or excretion 
is ever under systole and diastole influences. 
