 | 1805 - 534 Seiten
...a soil should be known, as it affords an indication of the quantity of animal and vegetable matter it contains ; these substances being always most abundant...guides in directing the experiments. Thus siliceous soils are generally rough to the touch, and scratch glass when rubbed upon it ; aluminous soils adhere... | |
 | Friedrich Christian Accum - 1808 - 492 Seiten
...be known, as it affords an indication of the quantity of animal and vegetable matter it contains 5 these substances being always most abundant in the...guides in directing the experiments. Thus siliceous soils are generally rough to the touch, and scratch glass when rubbed upon it; aluminous soils adhere... | |
 | William Nicholson - 1808 - 900 Seiten
...affords an indication of the quantity of animal and vegetable matter it contains, the*e substance* being always most abundant in the lighter soils. The...soils should likewise be examined before the analysis i» made, as they denote, to a certain extent, their composition, and serve as guide* in directing... | |
 | 1814 - 760 Seiten
...a soil should be known, as it affords an indication of the quantity of animal and vegetable matter it contains ; these substances being always most abundant in the lighter soils.* ' The first process of analysis is, to free the given weight of soil from as much of this water as possible,... | |
 | Sir Humphry Davy, George Sinclair, John Russell Duke of Bedford - 1815 - 452 Seiten
...a soil should be known, as it affords an indication of the quantity of animal and vegetable matter it contains ; these substances being always most abundant...guides in directing the experiments. Thus siliceous soils are generally rough to the touch, and scratch glass when rubbed upon it ; ferruginous soils are... | |
 | 1816 - 442 Seiten
...vegetable matter it contains; these substances being always most abundant in the lighter soils,The other physical properties of soils should likewise...guides in directing the experiments. Thus siliceous soils are generally rough to the touch, and scratch glass when rubbed upon it; ferruginous soils are... | |
 | William Thomas Brande - 1821 - 666 Seiten
...a soil should be known, as .it affords an indication of the quantity of animal and vegetable matter it contains ; these substances being always most abundant...guides in directing the experiments. Thus, siliceous soils are generally rough to the touch, and scratch glass when rubbed upon it: ferruginous soils are... | |
 | Andrew Ure - 1821 - 436 Seiten
...a soil should be known, as it affords an indication of the quantity of animal and vegetable matter it contains ; these substances being always most abundant...guides in directing the experiments. Thus siliceous soils are generally rough to the touch, and scratch glass when rubbed upon it : aluminous soils adhere... | |
 | Andrew Ure - 1821 - 436 Seiten
...a soil should be known, as it affords an indication of the quantity of animal and vegetable matter it contains; these substances being always most abundant in the lighter soils. The o. her physical properties of soils should likewise be examined before the analysis is made, as they... | |
 | John Claudius Loudon - 1822 - 1494 Seiten
...a soil should be known, as it affords an indication of the quantity of animal and vegetable matter it contains ; these substances being always most abundant...and serve as guides in directing the experiments. Tims siliceous soils are generally rough to the touch, and scratch glass when rubbed upon it ; ferruginous... | |
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It is of importance, that the specific gravity of a soil should be known, as it affords an indication of the quantity of animal and vegetable matter it contains ; these substances being always most abundant in the lighter soils. 
