Note B — SECTION IV. OF THE GLANDS OF MUCOUS MEMBRANES.

The bile in the gall bladder, the urine in the bladder, and the semen in the vesicula seminales, are certainly absorbed; but it is not the fluid itself that re-enters the circulation, but only its finest parts, some of its principles that we are not well acquainted with, probably its aqueous or lymphatic portion. This does not resemble the absorption in the pleura and other analogous membranes, in which the fluid rejoins the blood in the same state as it left it.