Animal life in the sea and on the land . $ip N/fa^ Fit:. 242.—The Narwi corn, which is remarkable for its one great tusk. Thisstrong weapon is possessed only by the males, and it isin reality the left upper incisor, grown to a prodigiouslength. It projects from the upper jaw, straight forward 352 ANIMAL LIFE IN THE SEA AND ON THE LAND. in the line of the body, and it keeps on growing through-out the whole life of the animal, until it sometimes meas-ures eight or ten feet—a goodly-sized tooth, which is spi-rally twisted, and tapers to a point. Its companion, theright incisor, is only a rudiment
Animal life in the sea and on the land . $ip N/fa^ Fit:. 242.—The Narwi corn, which is remarkable for its one great tusk. Thisstrong weapon is possessed only by the males, and it isin reality the left upper incisor, grown to a prodigiouslength. It projects from the upper jaw, straight forward 352 ANIMAL LIFE IN THE SEA AND ON THE LAND. in the line of the body, and it keeps on growing through-out the whole life of the animal, until it sometimes meas-ures eight or ten feet—a goodly-sized tooth, which is spi-rally twisted, and tapers to a point. Its companion, theright incisor, is only a rudimentary tooth, and does notoften grow into view. The ivory of the narwhals tuskis very valuable, as it takes a fine polish, and retains itsbeautiful whiteness for a long time. HOUSES. 353 LI. HORSES. SUB-KINGDOM, VERTEBRATA: CLASS, MAMMALIA. 1. Horses known chiefly as Domestic Animals. — Horseshave so long been associated with man, and employed soexclusively in his service, that we scarcely realize there. Fig. 243.—Horses. was once a time when these noble animals were free andunrestrained. There are some wild horses at the pres-ent day, it is true, yet it is believed that all of these have 354: ANIMAL LIFE IN THE SEA AND ON THE LAND. descended from tame horses which escaped from theirmasters. 2. Horses brought to America by the Spaniards. — Thehistory of the horse on our own continent, so far as it isknown, is exceedingly interesting. It shows that at thetime of the discovery of America there were no horseshere, and that they were afterwards brought into the coun-try by the Spaniards during the Mexican wars. 3. According to the accounts of this conquest, the na-tives of Mexico were greatly astonished to behold the in-vaders upon horseback. Not only was the beautiful ani-mal itself wholly unknown to them, but their surprise wasfurther increased by the remarkable sight of a man seatedupon its back. 4. Proofs of their Former Existence in America. — Not-withstanding the fac
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1887
