The American Journal of ScienceJ.D. & E.S. Dana, 1895 |
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Стр. 3
... separated by a vertical inter- val of 15 to 20 or 25 feet . The upper or Van Wert beach , with its crest varying in altitude from 200 to 220 feet above Lake Erie ( whose mean height is 573 feet above the sea ) , extends about 75 miles ...
... separated by a vertical inter- val of 15 to 20 or 25 feet . The upper or Van Wert beach , with its crest varying in altitude from 200 to 220 feet above Lake Erie ( whose mean height is 573 feet above the sea ) , extends about 75 miles ...
Стр. 7
... separated by vertical intervals of 10 feet or more . Most of the northern beaches , it should be remarked , are very feebly developed , even in the most favorable situations for their formation , and are not dis- cernible along the far ...
... separated by vertical intervals of 10 feet or more . Most of the northern beaches , it should be remarked , are very feebly developed , even in the most favorable situations for their formation , and are not dis- cernible along the far ...
Стр. 21
... separated from each other by air bubbles . This would render the rapidity of action less satisfactory ; besides , it would also cause a rapid oxidation of the mercury . As soon as the quantity of mercury injected into A brings the ...
... separated from each other by air bubbles . This would render the rapidity of action less satisfactory ; besides , it would also cause a rapid oxidation of the mercury . As soon as the quantity of mercury injected into A brings the ...
Стр. 70
... separated by the long , almost indefinitely long , period during which the falls of the smaller stream carried on the work . And all this plus a short period for the Chicago outlet has been since the ice age . There is some evidence in ...
... separated by the long , almost indefinitely long , period during which the falls of the smaller stream carried on the work . And all this plus a short period for the Chicago outlet has been since the ice age . There is some evidence in ...
Стр. 97
... separated by considerable thickness of strata from * Journal Geol . , vol . ii , p . 597 . AM . JOUR . SCI . - THIRD SERIES , VOL . XLIX , No. 290. - FEB . , 1895 . the latest Devonian horizon of the local section ; by 7 Fossils in ...
... separated by considerable thickness of strata from * Journal Geol . , vol . ii , p . 597 . AM . JOUR . SCI . - THIRD SERIES , VOL . XLIX , No. 290. - FEB . , 1895 . the latest Devonian horizon of the local section ; by 7 Fossils in ...
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acid Algonquin altitude appears argon atomic weight basin beach beds bowlders carbon Carboniferous chemical chloride chromospheric Coal Measures color colorless Comanche series constant containing Cragin Cretaceous crystals curve deposits described determined Devonian east electric equation fath fauna feet figs formation fossils Geol Geological glacial gneisses Hall heat helium hydrochloric acid hydrogen Ibid inches iodide iodine Island Jour Journal Kansas Lake limestone lines long liquid lower magnetic mass miles mineral molecules moraine Mountain nearly nitrogen Oaxaca observed obtained occur orthoclase oxide oxygen paper period plane plates potassium present probably Prof Professor pubescent quartzite range region ridges river rock salt sandstone schreibersite secondary selenic acid shales sodium solution species specimens spectrum Spirifer substance surface temperature thallium theory thickness tion tube upper uraninite valley Verrill volume waves
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Стр. 236 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Стр. 508 - Index Kewensis: an enumeration of the genera and species of flowering plants from the time of Linnaeus to the year 1885 inclusive, together with their authors' names, the works in which they were first published, their native countries, and their synonyms.
Стр. 292 - It will be remembered that, from the velocity of sound in a gas, the ratio of specific heat at constant pressure to that at constant volume can be deduced by means of the equation when n is the frequency, A.
Стр. 237 - As a unit of quantity, the international coulomb, which is the quantity of electricity transferred by a current of one international ampere in one second. As a unit of capacity, the international farad, which is the capacity of a condenser charged to a potential of one international volt by one international coulomb of electricity.
Стр. 237 - ... As a unit of electromotive force, the international volt, which is the electromotive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of one international ampere, and which is represented sufficiently well for practical use by \\\% of the electromotive force between the poles or electrodes of the voltaic cell known as Clark's cell, at a temperature of 15° C., and prepared in the manner described in the accompanying specification...
Стр. 318 - The crystals should be dissolved with the aid of gentle heat, but the temperature to which the solution is raised must not exceed 30° C.
Стр. 237 - The unit of induction shall be the Henry, which is the induction in a circuit when the electro-motive force induced in this circuit is one international volt while the inducing current varies at the rate of one Ampere per second.
Стр. 277 - We are in the case of Tarpeia, who opened the gates of the Roman citadel to the Sabines, and was crushed under the weight of the reward bestowed upon her.
Стр. 317 - The result will be the time-average of the current, if during the interval the current has varied. In determining by this method the constant of an instrument the current should be kept as nearly constant as possible, and the readings of the instrument observed at frequent intervals of time. These observations give a curve from which the reading corresponding to the mean current (time-average of the current) can be found. The current, as calculated by the voltameter, corresponds to this reading.
Стр. 316 - ... through a solution of nitrate of silver in water. The silver voltameter measures the total electrical quantity which has passed during the time of the experiment, and by noting this time the time average of the current, or, if the current has been kept constant, the current itself, can be deduced. In employing the silver voltameter to measure currents of about one ampere...