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angle appear Aries ascertained astronomers atmosphere attraction axis begin Boston called cause celestial equator centre circle comes comets complete consequently continually course dark declination describe difference direction distance earth east eclipse effect equal equator example Explain fact fall figure force given globe greater greatest half heavenly bodies heavens hemisphere Hence horizon hour Illustrate inhabitants Jupiter known latitude length less light London longitude mean meridian miles minutes months moon moon's motion move natural nearly night node noon observed obvious opposite orbit parallax passing period plain planets poles portion primary rays reckoned revolve round rising round round the earth round the sun satellites Saturn season Sect seen side signs solar sometimes stars stone summer sun's supposed surface TABLE take place tides true turn Venus visible zenith
Page 29 - The two great stars which mark the summit and the foot of the Cross having nearly the same right ascension, it follows hence, that the constellation is almost perpendicular at the moment when it passes the meridian.
Page 28 - We saw distinctly, for the first time, the cross of the south, only in the night of the 4th and 5th of July, in the sixteenth degree of latitude. It was strongly inclined, and appeared, from time to time, between the clouds, the centre of which, furrowed by uncondensed lightnings, reflected a silver light. The pleasure felt on discovering the southern cross was warmly shared by such of the crew as had lived in the colonies.
Page 28 - A traveller has no need of being a botanist to recognise the torrid zone on the mere aspect of its vegetation ; and without having acquired any notions of astronomy, without any acquaintance with the celestial charts of Flamstead and De la Caille, he feels he is not in Europe when he sees the immense constellation of the Ship or the phosphorescent clouds of Magellan arise on the horizon.
Page 28 - ... of space remarkable for their extreme blackness, give a particular physiognomy to the Southern sky. This sight fills with admiration even those who, uninstructed in the branches of accurate science, feel the same emotion of delight in the contemplation of the heavenly vault, as in the view of a beautiful landscape, or a majestic site. A traveller...
Page 28 - I was agitated by a fear unknown to those who love a sedentary life. It seemed painful to me to renounce the hope of beholding those beautiful constellations •which border the southern pole. Impatient to rove in the equinoctial regions, I could not raise my eyes...
Page 32 - All places between the equator and the north pole are in north latitude, and all places between the equator and the south pole are in south latitude. The latitude is greater, as the place is farther from the equator and nearer the poles.
Page 28 - Nothing awakens in the traveller a livelier remembrance of the immense distance by which he is separated from his country, than the aspect of an unknown firmament.
Page 112 - The most remote were about 9 or 10 miles distant from each other, in a line differing little from the course of the meteor. It is therefore probable that the successive masses fell in this order, 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.
Page 29 - It has been observed at what hour of the night, in different seasons, the Cross of the South is erect, or inclined. It is a time-piece that advances very regularly near four minutes a day, and no other group of stars exhibits, to the naked eye, an observation of time so easily made. How often have we heard our guides exclaim in the savannas of Venezuela, or in the desert extending from Lima to Truxillo, " Midnight is past, the Cross begins to bend!