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In the mammalian class the males possess rudiments of a uterus with the adjacent passage, in their vesiculae prostaticae; they bear also rudiments of mammae, and some male Marsupials have traces of a marsupial sack. The male Thylacinus offers the best instance.
The scrotum may be normal or split; the testicles, commonly two in number, may be normal or atrophic, descended or undescended; the prostate may be normal or imperfectly developed, as may also the vasa deferentia and vesiculae seminales.
The epididemes, or prostatae are fixed to the upper part of the testes, and from them spring the vasa deferentia, or ejaculatoria, which deposit the seed into the vesicule seminales when they come near the neck of the bladder. There are two of these vesiculae, each like a bunch of grapes, which emit the seed into the urethra in the act of copulation.
This beautiful Fucus is thick set with very small short tufts of leaves, which by the help of a magnifying glass seem to be round and articulated, as if they were seed vessels; besides these there are other broad leaves, chiefly at the extremity of the branches, serrated on the edges. The vesiculae are round, of the bigness expressed in the figure.
In a large number of cases there were associated deformities of the organs of generation, especially of the female organs, and these were almost invariably on the side of the renal defect; they affected the conducting portion much more than the glandular portion that is, uterus, vagina, and Fallopian tubes in the female, and vas deferens or vesiculae seminales in the male, rather than the ovaries or testicles.
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