The American Journal of Science, & C, Volume 1

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J. Eastburn and Company, 1818 - Geology
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Page 319 - A little farther is another mound, which 1 had not time to examine. On these great works of art, the Indians gazed with as much curiosity as any white man. I inquired of the oldest chief, if the natives had any tradition respecting them ; to which he answered in the negative. I then requested each to say what he supposed was their origin. Neither could tell : though all agreed in saying ; " they were never put up by our people.
Page 221 - The summit of the Lookout mountain overlooks the whole country. And to those who can be delighted with the view of an interminable forest, penetrated by the windings of a bold river, interspersed with hundreds of verdant prairies, and broken by many ridges and mountains, furnishes in the month of May, a landscape, which yields to few others, in extent, variety or beauty.
Page 319 - The circumference of the base, including the feet of three parapets, measured one thousand one hundred and fourteen feet. One of these parapets extends from the base to the summit, and can be ascended, though with difficulty, on horseback. The other two, after rising thirty or forty feet, terminate in a kind of triangular platform. Its top is level, and at the time I visited it, was...
Page 419 - ... communicate, by a common mass of tin extending the whole length of the frame, between TT: but in front, as in fig. 1, there is an interstice between the mass of tin connecting the ten copper sheets, and that connecting the ten zinc sheets. The screw forceps, appertaining to each of the tin masses, may be seen on either side of the interstice: and likewise a wire for ignition held between them. The application of the rope, pulley, and weights, is obvious. The swivel at S permits the frame to be...
Page 4 - A grand outline has recently been drawn by Mr. Maclure, with a masterly hand, and with a vast extent of personal observation and labour : but to fill up the detail, both observation and labour still more extensive are demanded; nor can the object be effected, till more good geologists are formed, and distributed over our extensive territory.
Page 419 - ... forceps, appertaining to each of the tin masses, may be seen on either side of the interstice ; and likewise a wire for ignition held between them. The application of the rope, pulley, and weights, is obvious. The swivel at S permits the frame to be swung round and lowered into water in the vessel a, to wash off the acid, which, after immersion in the other vessel, might continue to act on the sheets, encrusting them with oxide. Between pp there is a wooden partition which is not necessary, though...
Page 413 - That no subtile fluid, such as the matter of heat has been imagined to be, can be discharged from these substances, in consequence of the effect of the electricity, seems probable, from the circumstance, that a wire of platina may be preserved in a state of intense ignition in vacuo, by means of the voltaic apparatus, for an unlimited time; and such a wire cannot be supposed to contain an inexhaustible quantity of subtile matter.
Page 417 - The edges of the shortened sheets being defended by strips of wood, tin was cast on the intermediate protruding edges of the longer ones, so as to embrace a portion of each equal to about one quarter of an inch by four inches. On one side, the tin was made to run completely across, connecting at the same time ten copper and ten zinc sheets. On the other side there was an interstice of above a quarter of an inch left between the stratum of tin embracing the copper, and that embracing the zinc plates....
Page 298 - Previous to the year 1805, the practice of physic in the State of New York, was regulated by no public authority, and, of course, was not in the happiest condition to promote the respectability and usefulness of the profession. To remove, as far as possible, the existing circumstances, Dr. Bruce became an active agent, and, in conjunction with Dr. Romayne, and other medical gentlemen of New York, succeeded in establishing the State and County Medical Societies, under the sanction of the Legislature.
Page 416 - ... red heat. The charcoal, notwithstanding the shrinkage consequent to the fire, was brought into complete contact with the inclosing metallic surfaces by pressing the interior cylinder further into the exterior one. Thus prepared, the interior cylinder being made to touch one of the Galvanic surfaces, a wire brought from the other Galvanic surface into contact with the outside cylinder, was not affected in the least, though the slightest touch of the interior one caused ignition. The contact of...

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