Fig. 4.
A, Part of the Spleen of some Quadrupede cut off, after the whole Spleen has been distended with Wind and dried.
B, The External common Membrane deriv'd from the Pe∣ritonaeum.
C, The Internal Proper Membrane of the Spleen.
D E, &c, The Cells of its Cavernous Body, which open in∣to the Large Veins of the Spleen.
In the Humane Spleen these Cells are more Numerous and Less, and open into the Extremities of the Veins and Arteries. I know Ruysch in his Accurate Anatomical Epistles lately publish'd, denies the Existence of these Cells as well as Fibres in the Humane Spleen, but if you blow into the Splenick Vein, or Inject Water by the Arteries, when the Outward Membrane of the Spleen is not torn or broke in taking it out (which are very liable to happen in freeing the Humane Spleen) you may be satisfied of the Existence of its Cells; and if you Inject the Veins with Wax you will find this Difference from that of a Quadrupede; that the Wax in the Humane Spleen do's not reach the Cells, except it is driven on with great Force, and Injected very hot; but if you Inject Wax into the Spleen of an Ox, Dog, or the like, you will find all its Cells soon distended with it, and the great Ramifications of the Veins scarce to be distin∣guished, by Reason the Wax so soon passes out of their Sides into the Cells.