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Strong fans draw air from various extinct craters, force it through ventilating ducts into every room and recess of the city, and exhaust it into the shaft of a quiescent volcano, in whose gaseous outflow any trace of our activities is, of course, imperceptible. For obvious reasons no rockets or combustion motors are used in the city proper."
GENITAL DUCTS AND INTROMITTENT ORGANS. According to the theory of the coelom which we owe to Goodrich, in all the coelomata the coelom is primarily the generative cavity, on the walls of which the gametocytes are situated, and the coelomic ducts are the original genital ducts.
"I told him what I'd do to him if he tried to auction that cayuse off an' he retorted that if I didn't shut up an' mind my own business, that he'd sell the horse this noon, at twelve o'clock, in the public square, wherever that is. I told him he was a coyote and dared him to do it. Told him I'd pump him full of air ducts if he didn't wait till next week.
Most of the liquid acting on the food in the small intestine is supplied by two large glands, the liver and the pancreas, that connect with it by ducts. It weighs about four pounds and is separated into two main divisions, or lobes. It is complex in structure and differs from the other glands in several particulars.
Fortunately, Jean Valjean had left behind him the sewer of the markets whose geometrical plan presents the appearance of a multitude of parrots' roosts piled on top of each other; but he had before him more than one embarrassing encounter and more than one street corner for they are streets presenting itself in the gloom like an interrogation point; first, on his left, the vast sewer of the Platriere, a sort of Chinese puzzle, thrusting out and entangling its chaos of Ts and Zs under the Post-Office and under the rotunda of the Wheat Market, as far as the Seine, where it terminates in a Y; secondly, on his right, the curving corridor of the Rue du Cadran with its three teeth, which are also blind courts; thirdly, on his left, the branch of the Mail, complicated, almost at its inception, with a sort of fork, and proceeding from zig-zag to zig-zag until it ends in the grand crypt of the outlet of the Louvre, truncated and ramified in every direction; and lastly, the blind alley of a passage of the Rue des Jeuneurs, without counting little ducts here and there, before reaching the belt sewer, which alone could conduct him to some issue sufficiently distant to be safe.
After discussing mental traits observed in each sex which normally belong to the other, he concludes as follows: "If further evidence of this bisexuality, which exists in everyone, were required, it is to be found in the embryological remains of the latent sex, which always exist in the genital ducts." In some lower forms, dual sexuality is apparent until the animal is fairly well developed.
In one case eighteen days after heat, the milk gland was in a condition resembling that found in the stages twenty-four and thirty-six hours after parturition. In another specimen, twenty-one days after heat, the milk glands were still more advanced, with distended alveoli and enlarged ducts.
In the Ephemerides there is an account of a man who had a constant flow of semen from an abnormal opening in the abdomen. La Peyroma describes a case of impotence due to ejaculation of the spermatic ducts into the bladder instead of into the urethra, but remarks that there was a cicatrix of a wound of the neighboring parts.
In other woods there are no ducts, or they are evenly distributed, but the transition from the close autumn wood, consisting of smaller and more closely packed cells, to the wood of looser texture, formed in the following spring, makes a line that marks the season's growth. Romeyn B. Hough, of Lowville, N.Y., will supply a package of such sections for one dollar.
This condition applies to the food and the digestion of man. The digestive apparatus of the human body consists of the alimentary canal and tributary organs which, although outside of this canal, communicate with it by ducts. The alimentary canal consists of the mouth, the pharynx, the oesophagus, the stomach, and the intestines.
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