 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. The other physical properties...  System of Theoretical and Practical Chemistry ... - Seite 375von Friedrich Christian Accum - 1808Vollansicht - Über dieses Buch
 | Repertory of arts, manufactures and agriculture - 1805 - 534 Seiten
...be known, as it affords aji indication of the quantity of animal and vegetable matte* it contains ; these substances being always most abundant in the...guides in directing the experiments. Thus siliceous soilj 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... | |
 | Sir Humphry Davy, George Sinclair, John Russell Duke of Bedford - 1815 - 452 Seiten
...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...to the touch, and scratch glass when rubbed upon it ; ferruginous soils are of a red or yellow colour ; and calcareous soils are soft. 1. Soils, though... | |
 | 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...the touch, and scratch glass when rubbed upon it; ferruginous soils are of a red or yellow colour; and calcareous soils are soft. '* 1. Soils, though... | |
 | William Thomas Brande - 1821 - 806 Seiten
...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...to the touch, and scratch glass when rubbed upon it : ferruginous soils are of a red or yellow colour ; and calcareous soils are soft. " 1. Soils, though... | |
 | Andrew Ure - 1821 - 436 Seiten
...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...composition, and serve as guides in directing the experiment . Thus siliceous soils are generally rough to the touch, and scratch glass when rubbed upon... | |
 | John Claudius Loudon - 1822 - 1494 Seiten
...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...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... | |
 | F. ACCUM - 1828 - 526 Seiten
...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...the touch, and scratch glass when rubbed upon it; argillaceous soils adhere strongly to the tongue, and emit a strong earthy smell when breathed qn ;... | |
 | Sir Humphry Davy - 1836 - 458 Seiten
...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...the touch, and scratch glass when rubbed upon it; ferruginous soils are of a red or yellow colour ; and calcareous soils are soft.t 1. Soils, though... | |
 | 1840 - 532 Seiten
...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...other physical properties of soils should likewise be ex~ amined before the analysis is made, as they denote, to a certain extent, their composition, and... | |
| |
