Transactions, Том 2,Частини 2 – 3 |
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acid Alexander aphelion appear arctic Ballagan beds Bishopbriggs boulder clay Brockley Campsie Carbonate of Lime Carboniferous Carluke cementing cent character climate Clyde Coal Measures colour Coltpark containing Craigenglen CROSSKEY Crustacea Cythere Dalmuir deposits district drift Entomostraca examined exhibited feet Foraminifera fossils fragments genus Geol Geological Society glacial epoch Glasgow glen gold grains greenstone heat hemisphere hills ironstone James James Croll John Young Journ Kilmaurs Lanarkshire land Leda Limest limestone shales Lingula Linn M'Coy magnesia marine fossils marine Shells mica miner numerous obliquity occur Old Red Old Red Sandstone paper period peroxide of iron plates poles present probably quantity Quarry quartz rare Red Sandstone reefs Residue rocks sand shale Silurian Smith species specimens stone strata stream surface temperature thickness trap upper valves Vincent Street Wallace Young West George Street West of Scotland Windmillcroft Wünsch
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Сторінка 182 - There is actually, therefore, nearly as much heat transferred from the tropical regions by the Gulf-stream as is received from the sun by the entire arctic regions ; the quantity conveyed by the stream to that received from the sun by those regions being as 15 to 18. But we have been assuming in our calculations that the percentage of heat absorbed by the atmosphere is no greater in polar regions than it is at the equator, which is not the case. If we make due allowance for the extra amount absorbed...
Сторінка 176 - N., or about 11° from the Pole. Prof. Heer considers that the winter temperature in Greenland could never have fallen below 34° F., and says — " These conclusions are only links in the grand chain of evidence obtained from the examination of the Miocene flora of the whole of Europe. They prove to us that we could not, by any re-arrangement of the relative positions of land and water, produce for the northern hemisphere a climate which would explain the phenomena in a satisfactory way. We must...
Сторінка 181 - I came to the conclusion that the total quantity of water conveyed by the stream is probably equal to that of a stream 50 miles broad and 1000 feet deep,* flowing at the rate of four miles an hour, and that the mean temperature of the entire mass of moving water is not under 65° at the moment of leaving the Gulf.
Сторінка 182 - ... surface on the equator during the twelve hours from sunrise till sunset at the time of the equinoxes is to the total amount which would be received upon that surface, were the sun to remain in the zenith during those twelve hours, as the diameter of a circle to half its circumference, or as 1 to 1*5708. It follows, therefore, that a square foot of surface on the equator receives from the sun at the time of the equinoxes 1,780,474 foot-pounds daily, and a square mile 49,636,750,000,000, foot-pounds...
Сторінка 231 - It has not yet attained anything like the abundance of the shad, nor was this to have been expected from the meagre plants, but there seems to be no reason to doubt that it is only a question of time when it will become one of the most prominent economic fishery products of the region as well as a favorite object of capture by sportsmen. The largest quantities of striped bass are taken for market in San Francisco Bay with seines and gill nets.
Сторінка 233 - ... articulate; when recent, cylindrical or nearly so, rolling spirally. Feet small, numerous ; segments 30 or more ; anterior segments smooth, posterior with transverse wrinkles, giving a furrowed appearance. In some specimens, traces of a series of lateral pores or stigmata. Labrum ? quadrilateral, divided by notches or joints into three portions. Mandibles two-jointed, last joint ovate and pointed. Eyes ten or more on each side.
Сторінка 181 - Consequently the total quantity of heat transferred from the equatorial regions per day by the stream amounts to 154,959,300,000,000,000,000 foot-pounds. From observations made by Sir John Herschel and by M. Pouillet on the direct heat of the sun, it is found that were no heat absorbed by the atmosphere, about 83 foot-pounds per second would fall upon a square foot of surface placed at right angles to the sun's rays. | Mr. Meech estimates that the quantity of heat cut off by the atmosphere is equal...
Сторінка 181 - Mr. Meech estimates that the quantity of heat cut off by the atmosphere is equal to about 22 per cent, of the total amount received from the sun. M. Pouillet estimates the loss at 24 per cent. Taking the former estimate, 64'74 foot-pounds per second will therefore be the quantity of heat falling on a square foot of the earth's surface when the sun is in the zenith. And were the sun to remain stationary in the zenith for twelve hours, 2,796,768 foot-pounds would fall upon the surface. It can be shown...
Сторінка 292 - Notes on some Fossil Crustacea, and a Chilognathous Myriapod from the Coal Measures of the West of Scotland.
Сторінка 178 - Meech,* if 365'24 thermal days represent the present total annual quantity of heat received at the equator from the sun, 151-59 thermal days will represent the quantity received at the poles. Adopting his method of calculation, it turns out that when the obliquity of the ecliptic is at its maximum, viz., at 24° 50' 34", the quantity received at the equator would be 363'51 * Smithsonian Contributions to Knowledge, Vol.