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Updated: June 25, 2025
This is only so as a passing phase of the early embryonic life in the three higher classes of Vertebrates, the Amniotes. They represent the third and last generation of the vertebrate kidneys. Here a simple tube, the secondary renal duct, develops, near the point of its entry into the cloaca; and this tube grows considerably forward.
The tube through which food and drink pass from the pharynx to the stomach; called also the gul'let. Gall blad'der. The bile bladder; the sac, or reservoir, lying on the under side of the liver, in which the bile is received from the liver, and in which it is retained until discharged through the gall duct into the small intestine. Gas'tric juice. In tes'tine.
Iron pipes are either laid in trenches filled in with earth or are laid in cement. Iron pipe will of course rust out in time, and if absolute permanence in construction is desired, should be laid in cement, for after the pipe rusts out, the duct of cement is still left.
Thus when any extraneous material on the eye-ball, or the dryness of the external covering of it, or the coldness of the air, or the acrimony of some vapours, as of onions, stimulates the excretory duct of the lacrymal gland, it discharges its contents upon the ball; a quicker secretion takes place in the gland, and abundant tears succeed, to moisten, clean, and lubricate the eye.
If the wound heals so that the chyle is prevented from escaping, a fluctuating swelling may form beneath the scar; in course of time it gradually disappears. An attempt should be made to close the wound in the duct by means of a fine suture; failing this, the duct must be occluded by a ligature as if it were a bleeding artery.
No séances at a guinea a head for the sake of being pinched by “Mary Jane” can annihilate railways, steamships, and electric telegraphs, which are demonstrating the interdependence of all human interests, and making self-interest a duct for sympathy. These things are part of the external Reason to which internal silliness has inevitably to accommodate itself.
I thrust head and shoulders into the opening. Inside it was smooth metal, with no handholds. I clawed at it trying to get farther in. The pain stabbed at my chest. "Cap'n, they're workin' on the door," Thomas said. "They already been at it for a little while. We better get goin'." "You'd better give me a push, Thomas," I said. My voice echoed hollowly down the duct.
If the period of sexual excitement extends over fifteen to thirty minutes, the whole duct system from the epididymis to the ampulla becomes gorged with the secreted testicular product. This secretion consists of active motile spermatozoa, of spermatic granules and of mucus.
Alcoholic drinks exercise a destructive influence upon the heart, the circulation, and the blood itself. These vicious liquids can reach the heart only indirectly, either from the stomach by the portal vein to the liver, and thence to the heart, or else by way of the lacteals, and so to the blood through the thoracic duct.
It is very small, and terminates in the cuticle, in order that the highly sensitive membrane of the nose may not be excoriated by the tears occasionally rendered acrimonious in inflammation of the eye. The oval termination of this duct is easily brought into view by lifting the nostril.
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