Transactions of the American Philosophical Society, Τόμος 6American Philosophical Society, 1809 Held at Philadelphia for promoting useful knowledge. |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 21.
Σελίδα 49
... extremely variable in the winter season , seldom blowing above three days successively from the same point ; the north - west wind brings us the seve- rest cold . It may be considered as a general rule during winter , that all winds ...
... extremely variable in the winter season , seldom blowing above three days successively from the same point ; the north - west wind brings us the seve- rest cold . It may be considered as a general rule during winter , that all winds ...
Σελίδα 52
... extremely susceptible of the sudden transitions which natu- rally suggests the idea , that frequent pleuritic and inflammatory diseases must be the natural attendants of our variable winter climate , but experience demonstrates the ...
... extremely susceptible of the sudden transitions which natu- rally suggests the idea , that frequent pleuritic and inflammatory diseases must be the natural attendants of our variable winter climate , but experience demonstrates the ...
Σελίδα 89
... extremely deficient in practical utility . In this first report I will therefore confine myself to such im- provements as have had a fair trial , in engines actually at work . Steam - engines , on the old construction , were introduced ...
... extremely deficient in practical utility . In this first report I will therefore confine myself to such im- provements as have had a fair trial , in engines actually at work . Steam - engines , on the old construction , were introduced ...
Σελίδα 90
... extremely useful , came to America . He put up the engine , which at different times has been at work during the last thirty years , and which , notwithstanding its imperfect construction , and the faulty boring of its cylinder ...
... extremely useful , came to America . He put up the engine , which at different times has been at work during the last thirty years , and which , notwithstanding its imperfect construction , and the faulty boring of its cylinder ...
Σελίδα 99
... extremely difficult , was yet , in a few instances partially attain- ed . Platinum was described , as not only susceptible of fu- sion , but even of volatilization . Being induced , last winter , to reinstate the apparatus , by which ...
... extremely difficult , was yet , in a few instances partially attain- ed . Platinum was described , as not only susceptible of fu- sion , but even of volatilization . Being induced , last winter , to reinstate the apparatus , by which ...
Περιεχόμενα
188 | |
191 | |
201 | |
209 | |
221 | |
230 | |
247 | |
255 | |
55 | |
61 | |
66 | |
69 | |
79 | |
82 | |
89 | |
99 | |
105 | |
113 | |
119 | |
129 | |
143 | |
154 | |
165 | |
264 | |
275 | |
293 | |
323 | |
345 | |
352 | |
360 | |
368 | |
375 | |
384 | |
391 | |
401 | |
407 | |
428 | |
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
1st sat 1st satellite 2d satellite 88 Clear acid alizé altitude American Andrew Ellicott angle animal appears body boiler cells Clouds & sunshine cock colour conjunction degree diameter distance ditto Drizzly E Cloudy earth east eclipse Emersion equal feet fluid Friday Greenwich Grey clouds Havanna Horary HOURS Immersion inches John Kinderhook Lancaster language latitude Light clouds limb Lond London longitude lunar Madrid mean meridian miles minute Mississippi moon moon's motion mucus N W 1 Clear N W Clear Natchez New-Orleans New-York North observed parallax Paris Philad Philadelphia pyrites quantity Rain REMARKS right hand river rock S W Cloudy satellite of Jupiter Satur season semidiameter Society solar eclipse species sphex stars stone sun's Sunday supposed surface tables telescope terre Thin white clouds Thurs tion Tues vegetable velocity Veracruz weather William William Dunbar WINDS
Δημοφιλή αποσπάσματα
Σελίδα 30 - I was called up," says Mr. Ellicott, " about 3 o'clock in the morning, to see the shooting stars, as they are called. The phenomenon was grand and awful. The whole heavens appeared as if illuminated with sky-rockets, which disappeared only by the light of the sun, after daybreak. The meteors, which at any one instant of time appeared as numerous as the stars, flew in all possible directions except from the earth...
Σελίδα 328 - The masses, projected at the second explosion, seem to have fallen principally at and in the vicinity of Mr. William Prince's in Weston, distant about five miles, in a southerly direction, from Mr. Burr's.
Σελίδα 139 - Appearances certainly indicate that it has derived both origin and growth from the accustomary collection of hones, and deposition of them together ; that the first collection had been deposited on the common surface of the earth, a few stones put over it, and then a covering of earth, that the second had been laid on this, had covered more or less of it in proportion to the number of bones, and...
Σελίδα 327 - It is therefore probable that the masses tell in this ordtr — the most northerly first, and the most southerly last. We think we are able to point out three principal places where stones have fallen, corresponding with the three loud cannon-like reports, and with the three leaps of the meteor, observed by Mr.
Σελίδα xliv - Representatives, on the subject of establishing a uniformity in the weights, measures, and coins, of the United States, has proposed that the weight of the dollar should correspond with the unit of weight.
Σελίδα 92 - ... from which no particular mode of application can be free. These are : " First. The weight of the engine and of the fuel. "Second. The large space it occupies. " Third. The tendency of its action to rack the vessel and render it leaky. " Fourth. The expense of maintenance " Fifth. The irregularity of its motion, and the motion of the water in the boiler and cistern, and of the fuelvessel in rough water. "Sixth. The difficulty arising from the liability of the paddles or oars to break, if light,...
Σελίδα 93 - ... sixth, the difficulty arising from the liability of the paddles or oars to break if light, and from the weight, if made strong. Nor have I ever heard of an instance, verified by other testimony than that of the inventor, of a speedy and agreeable voyage having been performed in a steamboat of any construction.
Σελίδα 92 - ... started into very general notice in a form in which it could not possibly be attended with much success. A sort of mania began to prevail, which indeed has not yet entirely subsided, for impelling boats by steam-engines. . . . For a short time a passage-boat, rowed by a steam-engine, was established between Bordentown and Philadelphia, but it was soon laid aside.