A systeme of anatomy, treating of the body of man, beasts, birds, fish, insects, and plants illustrated with many schemes, consisting of variety of elegant figures, drawn from the life, and engraven in seventy four folio copper-plates. And after every part of man's body hath been anatomically described, its diseases, cases, and cures are concisely exhibited. The first volume containing the parts of the lowest apartiments of the body of man and other animals, etc. / by Samuel Collins ...

CHAP. VIII. Of the Parts of Generation in the Cocks of Birds.

BIrds have a Cavity lodged between the Rump and Intestinum Rectum, * 1.1 somewhat resembling a Prepuce, out of which a Penis discovereth it self, of a membranous nature, in time of Coition, the Corpora Nervosa, if any, being very thin in Birds, in some of which it cometh out of the Body a great length, after the manner of a small Gut in point of substance, only it is desti∣tute of so great a Cavity as is found in a little Intestine. In great Birds the Penis is more fleshy and big, as having the Nervous Bodies more thick and large, giving greater Dimensions to the substance of the Penis.

This is very remarkable in an Estridge, * 1.2 in which may be discerned with∣in the Orifice of the Pudendum, a large Glans, in which it is Lodged, as within a Socket, somewhat like the Prepuce of a Horse: The Body of the Penis is hued with red, proceeding from numerous Blood-Vessels, dissemina∣ted through the substance of the Nervous Bodies, which are much greater in this large Fowl than in small Birds, in which it is difficult to discover any fleshy Substance, so that the Frame of the Penis in most Birds seemeth to be membranous.

In this Fowl the Penis resembleth a Hart's Tongue in figure and bigness, * 1.3 as learned Dr. Harvey hath observed, who saw this Animal often first shake its Penis, and afterwards immit it into the Vagina Uteri (relating to the Fe∣male) without any motion, as if they were nailed together for some time in coition, accompanied with many little sportings of the Head and Neck, as so many expressions of Pleasure.

The Testicles of a Turkey (as in other Birds) are oblong white Glan∣dulous Bodies, seated immediately under the Renes Succenturiati, * 1.4 between the Originations of the Kidneys, resting upon the Trunk of the great Arte∣ry and Vein, out of which do arise minute Branches of Spermatick Vessels, which are distributed into the substance of the Testicles, where the Seminal Liquor is generated, and afterwards carried down by two Spermatick Ducts by the Spine, and are inserted into the long Membranous Substance, vulgar∣ly called the Penis.

The Testicles in this Bird are connected to the upper Region of the Kid∣neys, and in some part to the Spine, and to the Trunk of Blood-Vessels, * 1.5 to which they are fastened by the Interposition of the preparing Artery and Vein, arising out of the descendent Trunk of the Aorta, and ascendent Trunk of the Vena Cava, and are endued with a different size, by reason the right is larger and longer than the left.

The Testicles of a Swan, Goose, Duck, and other Birds, * 1.6 are Lodged near the beginning of the Kidneys, and are conjoined to the great Blood-Vessels, (passing down the Spine) and have preparing Vessels sprouting out of them, and are divaricated in numerous Branches through the Body of the Testicles, wherein the Serous and Chymous part of the Blood are embodied with a choice Liquor, dropping out of the Extremities of the Nerves, and trans∣mitted into the Origens of the Seminal Tubes, and conveyed through the deferent Vessels into the Penis, which is a soft membranous Compage, * 1.7 mixed with a thin loose spongy Substance, and is distended by Blood, brought

into it by the Hypogastrick Arteries, and by Animal Spirits, carried with the Liquor between the Filaments of the Nerves, inserted into the Body of the Penis, whereupon it is thrust first out of a Cavity running between the Rump and Intestinum Rectum, * 1.8 and afterwards immitted into the Vulva of the Hen, and bedeweth it with a thin Seminal Juice, whose Spirituous parts are conveyed into the Uterus, and from thence, by a Tube, to the Eggs, which are thereby gradually impraegnated through the Ovary.

Notes

• * 1.1

  The Genitals of Birds.
• * 1.2

  The Genitals of an Estridge.
• * 1.3

  The Penis of an Estridge.
• * 1.4

  The Testicles of a Turkey.
• * 1.5

  The connexi∣on of the Te∣sticles in a Turkey.
• * 1.6

  The Testicles of Birds have many Vessels.
• * 1.7

  The Penis of Birds.
• * 1.8

  The Ovaries of Birds are made praeg∣nant by the spirituous parts of the Seed.