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Show 2t2 Explanation of the Plates. were only dried and varnished. They are taken from the mesentery of an ass, and even to the naked eye appeared cellular. Fig. 7. a. The same glands as seen through the microscope: the cells have a diFlerent shape from those of the absorbent glands of the human sub- ject, and resemble exceedingly the couvolutions of the cortical substance of the brain. Fig. 8. An anterior view of a gland, near the spleen ofa horse, injected in the same manner as the preceding; also dried and varnished. It re- sembled the vesiculae seminales, injected with quicksilver, both in its anterior view and in Fig. 9. Which is a posterior view of the same gland. Fig. 10. The same gland, after it was longitudinally divided, and that the mercury,which had long kept its cells distended, had escaped. The cells are now seen as distinct as those of a honey-comb; with this difference, that there are lateral communications between these cells, through which bristles passed with the greatest facility, as here represented. PLATE IV. a. A portion of the omentum ofa turtle, the trunk of an artery lies in the middle, opposite to letter a; two absorbents, which were injected with quicksilver, lie on each side of the artery; then two veins, one on the outside of each absorbent; and lust of all two other absorbents, one on the outside of each vein. The same arrangement takes place in the branches uniformly. b. c. d. A specimen of the manner in which a large absorbent vessel splits into a smaller, winding, convoluting, and conglomerated vessel, which after infinite convolutions, again returns to a large absorbent, or ends in the trunlt of the system. b. Is a trunk of the absorbents rising out of the lungs; c. is the thoracic duct going up towards the left subclavian vein; d. is the thoracic duct continued, emerging from under the convolution. " Represents - \Vll "\ fl "IV \ V l M09" "9am"! |