The Boston Journal of Philosophy and the Arts, Volume 3Cummings, Hilliard, & Company, 1826 - Science |
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Page 490
... Parallel lines . " By WARREN Colburn , Esq . SINCE publishing my theory of ... same objection is made to this definition in Playfair , that Professor ... straight lines are such as are in the same plane , and which being produced ever so ...
... Parallel lines . " By WARREN Colburn , Esq . SINCE publishing my theory of ... same objection is made to this definition in Playfair , that Professor ... straight lines are such as are in the same plane , and which being produced ever so ...
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Popular passages
Page 303 - The active powers of man ; with wise intent The hand of Nature on peculiar minds Imprints a different bias, and to each Decrees its province in the common toil.
Page 163 - ... numberless series of pilasters, arches, castles well delineated, regular columns, lofty towers, superb palaces, with balconies and windows, extended alleys of trees, delightful plains with herds and flocks, armies of men on foot and horseback, and many other strange figures in their natural colors and proper actions, passing rapidly in succession along the surface of the sea, during the whole of the short period of time while the above-mentioned causes remain.
Page 486 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Page 473 - ... that this revolution had buried all the countries which were before inhabited by men and by the other animals that are now best known; that the same revolution had laid dry the bed of the last ocean which now forms all the countries at present inhabited...
Page 162 - When the rising sun shines from that point whence its incident ray forms an angle of about 45° on the sea of Reggio, and the bright surface of the water in the bay is not disturbed either by the wind or the...
Page 81 - If a straight line meets two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
Page 404 - ... is passed over them, but they re-appear immediately when moistened by the breath, .and again disappear when the glass becomes dry. Steatite is not so easily effaced as chalk, and does not, like that substance, change its colours. Tailors and embroiderers also prefer it to chalk, for marking silk. It possesses the property of uniting with oils and fat bodies, and enters into the composition of the greater number of the balls which are employed for cleaning silks and woollen cloths ; it also forms...
Page 314 - The reply of the president was highly honourable to himself and the society whom he represented. It was to the effect that duty as well as inclination would always induce him to execute his Majesty's wishes to the utmost of his power ; " But, sire," said he, " I cannot reverse the laws and operations of Nature.
Page 163 - ... palms, and nearly down to the sea, the observer will behold the scene of the same objects not only reflected from the surface of the sea, but likewise in the air, though not so distinct or well defined as the former objects from the sea.
Page 434 - ... pieces of cork or of dry paper over the apertures, I could perceive them moving, by the force of the currents, at the distance of ten feet from the table on which the specimen rested.