General Geography, and Rudiments of Useful Knowledge: In Nine Sections ... Illustrated with an Elegant Improved Plate of the Solar System ... a Map of the World ... of the United States ... and Several Engravings on Wood. Digested on a New Plan, and Designed for the Use of SchoolsCroswell & Frary, 1809 - 381 sider |
Innhold
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Vanlige uttrykk og setninger
alkali Allegany America animal atmosphere attraction bank bodies calcareous called carbonic acid Carolina cause center of gravity climate clouds color common compounds conductor Connecticut Connecticut river considerable contains degree Delaware density distance division dollars earth eclipse ecliptic electric fluid equal equator exports extends falls feet force Geography globe heat horizon houses Hudson inhabitants iron Lake Lake Champlain Lake Erie Lake Ontario land latitude length longitude maize manufactures meridian miles long mineral Mississippi moon motion mountains mouth natural philosophy nature navigable New-Jersey New-York niter Ohio oxygene particles Pennsylvania planets pole population potash principal produce properties proportion quantities of matter rain right ascension rise river salt shire town situated soil specific gravity square mile stars stone stream substances sulphur sun's supposed surface tion United vapor vegetable velocity Vermont Virginia weight western whole winds
Populære avsnitt
Side 305 - Easter ; it will only serve for 310 years, old style. For as the new and full moons anticipate a day in that time, the golden numbers ought to be placed one day earlier in the kalendar for the next 310 years to come.
Side 108 - First, they see as the prelude to the ensuing havoc, whole fields of sugar canes whirled into the air, and scattered over the face of the country. The strongest trees of the forest are torn up by the roots and driven about like stubble; their windmills...
Side 302 - Amongst different nations, the beginning of the year varied, as well as the length. The Jews began their ecclesiastical year with the new moon of that month, whose full moon happened next after the vernal equinox. The church of Rome begin their year on the Sunday which falls on the said full moon, or that happens next after it ; or on Easter Sunday.
Side 8 - The periphery of every circle, whether great or small, is supposed to be divided into 360 equal parts called degrees, each degree into 60 minutes, each minute into 60 seconds, each second into 60 thirds, &c., marked with the characters °, ', ", '", &c. Thus, 32° 24...
Side 304 - Add 9 to the given year, and divide the sum by 28, the remainder is the year of the solar cycle ; if there be no remainder, the solar cycle is 28.
Side 108 - It is a sudden and violent storm of wind, rain, thunder, and lightning, attended with a furious swelling of the seas and sometimes with an earthquake; in short, with every circumstance which the elements can assemble that is terrible and destructive. First, they see as the prelude to the ensuing havoc, whole fields of sugar canes whirled into the air, and scattered over the face of the country.
Side 30 - To fold the right ascension and declination of am/ given star. Bring the given star to the meridian, and the degree under which it lies is its declination; and the point in which the meridian intersects the equinoctial is its right ascension- Thus the fight ascension of Sirius is 99°, its declination l6° 25' south ; the right ascension of Arcturus is 2ll°3u'j its declination 20° 20
Side 302 - There are, therefore, in every year seven months of 31 days each, four of 30 days each, and in the common years one of 28 days, but which contains 29 in every leap year. These are the months used for civil purposes. But the space of 28 days is also called a month, and it is by the division of this into four equal parts that the year is subdivided into weeks, each consisting of seven days. Hence, a common year consists of 13 of these months, or 52 weeks and one day, and a leap year of the same and...
Side 28 - ... midnight. Find the sun's place in the ecliptic, and raise the pole as much above the horizon as the sun (that day) declines from the equator ; then bring the place where the sun is vertical at that hour, to the brass meridian ; so will it then be in the zenith or centre of the horizon. Now see what countries lie on the western edge of the horizon, for in them the sun is rising; to those on the eastern side...
Side 68 - That is, gravity at the surface of the earth (which is about 4000 miles from the centre) is four times more powerful than...