 | Repertory of arts, manufactures and agriculture - 1805 - 534 páginas
...adhesive than aluminous soils. V. Mode of ascertaining the Quantity of Water of Absorption in Soils. Soils, though as dry as they can be made by continued...ten or twelve minutes over an Argand's lamp, in a bason of porcelain, to a temperature 300 * Fahrenheit ; and in case a thermometer is hot used", the... | |
 | Friedrich Christian Accum - 1808 - 492 páginas
...Water of Absorption in Soils. Soils, though as dry as they can be made by continued exposure to the air, in all cases still contain a considerable quantity...ten or twelve minutes over an Argand's lamp, in a bason of porcelain, to a temperature equal to 3OO* Fahrenheit ; and in case a thermometer is not used,... | |
 | Friedrich Christian Accum - 1814 - 484 páginas
...Water of Absorp* tion in Soils. Soils, though as dry as they can be made by continued exposure to the air, in all cases still contain a considerable quantity...porcelain, to a temperature equal to 300* Fahrenheit ; and in case a thermometer is not used, the proper degree may be easily ascertained, by keeping a piece... | |
 | 1814 - 760 páginas
...vegetable matter it contains ; these substances being always most abundant in the lighter soils.* ' The first process of analysis is, to free the given...done by heating it for ten or twelve minutes over an Argand'slamp, in a bason of porcelain, to a temperature equal to 300 Fahrenheit ; and if a thermometer... | |
 | Sir Humphry Davy, George Sinclair, John Russell Duke of Bedford - 1815 - 452 páginas
...vegetable matter it contains ; these substances being always most abundant in the lighter soils. The other physical properties of soils should likewise...composition ; and this may be done by heating it for t?n or twelve minutes over an ArI gand's lamp, in a bason of porcelain, to a temperature equal to 300... | |
 | F. ACCUM - 1828 - 526 páginas
...Water of Absorption in Soils. — Soils, though as dry as they can be made by continued exposure to the air, in all cases still contain a considerable quantity...done by heating it for ten or twelve minutes over a spirit lamp, in a basin of porcelain (fig. 4, pi. 1,) to a temperature equal to 300° Fahrenheit*;... | |
 | 1840 - 532 páginas
...abundant in the lighter soils. The other physical properties of soils should likewise be ex~ amined before the analysis is made, as they denote, to a...done by heating it for ten or twelve minutes over an argand lamp, in a basin of porcelain, to a temperature equal to 300 Fahrenheit; and if a thermometer... | |
 | Cuthbert William Johnson - 1842 - 1364 páginas
...vegetable matter, and can only be driven off from tljum by a considerable degree of heat. The fir-t process of analysis is to free the given weight of...done by heating it for ten or twelve minutes over an Argand lamp in a basin of porcelain to a température equal to 300° Fahrenheit ; and if a thermometer... | |
 | Cuthbert William Johnson - 1844 - 1210 páginas
...soils are soft. 1. Soils, though as dry as they can be made by continued exposure to air, in all cases contain a considerable quantity of water, which adheres...done by heating it for ten or twelve minutes over an Argand lamp in a basin of porcelain to a temperature equal to 300° Fahrenheit; and if a thermometer... | |
 | Cuthbert William Johnson - 1869 - 1296 páginas
...soils ar« soft. 1. Soils, though as dry as they can be maU by continued exposure to air, in all cases contain a considerable quantity of water, which adheres...done by heating it for ten or twelve minutes over an Argand lamp in a basin of porcelain to a temperature equal to 300° Fahrenheit; and if a thermometer... | |
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Soils, though as dry as they can be made by continued exposure to air, in all cases still contain a considerable quantity of water, which adheres with great obstinacy to the earths and animal and vegetable matter, and can only be driven off from them... 