 | Repertory of arts, manufactures and agriculture - 1805 - 534 pagine
...improvement, independent of experiment; but ' there are few cases in which the labour of analytical trials •will not be amply repaid by the certainty with which • they denote the best methods of amelioration ; and thii ' will particularly happen when the defect of composition is found in tlie... | |
 | 1805 - 534 pagine
...independent of experiment; but there are few cases in which the labour of analytical trials will net be amply repaid by the certainty with which they denote the best methods of amelioration ; and this •wilj. particularly happen when the defect of composition is found in the... | |
 | Friedrich Christian Accum - 1808 - 492 pagine
...improvement, independent of experiment ; but there are few cases in which the labour of analytical trials will not be amply repaid by the certainty with which they denote the best methods of amelioration ; and this will particularly happen when the defect of composition is found in the proportions... | |
 | James MacDonald (A.M.), Board of Agriculture (Great Britain) - 1811 - 848 pagine
...of experiment ; but there are few cases in which the labour of experiments, and even of analytical trials, will not be amply repaid by the certainty with which they denote B b 2 the the best methods of melioration ; and this will particularly happen when the defect of composition... | |
 | Friedrich Christian Accum - 1814 - 484 pagine
...the certainty with which they denote the best methods of amelioration ; and this will par ticularly happen when the defect of composition is found in...proportions of the primitive earths. In supplying animal or vegetable manure, a temporary tood only is provided for plants, which is in all cases exhausted... | |
 | F. ACCUM - 1828 - 526 pagine
...their improvement, independent of experiment; but there are few cases in which the labour of analytical trials will not be amply repaid by the certainty with which they denote the best methods of amelioration; and this will particularly happen when the defect of composition is found in the proportions... | |
 | Library, John Baxter - 1830 - 614 pagine
...their improvement, independent of experiment, but there are few cases in which the labour of analytical trials will not be amply repaid, by the certainty...composition is found in the proportions of the primitive earth«. In supplying animal or vegetable manure, a temporary food only is provided for plants, which... | |
 | Library, John Baxter - 1830 - 594 pagine
...there are few cases in which the labour of analytical trials will not beamply repaid, by the certainly with which they denote the best methods of melioration,...happen when the defect of composition is found in 'he proportions of the primitive earths. In supplying animal or vegetable manure, a temporary food... | |
 | John Claudius Loudon - 1831 - 1330 pagine
...case1! in which the labour of analytical trials will not be amply repaid by the certainty with wliich they denote the best methods of melioration ; and...organic matter, a temporary food only is provided for plant*, which is in all cases exhausted by means of a certain number of crops ; but when a soil is... | |
 | Luke Hebert - 1835 - 816 pagine
...improvement, independent of experiment ; but there are few cases in which the labour of analytical trials will not be amply repaid by the certainty with...proportions of the primitive earths. In supplying animal or vegetable manure, a temporary food only is provided for plants, which is in all cases exhausted... | |
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From the great difference of the causes that influence the productiveness of lands, it is obvious, that in the present state of science, no certain system can be devised for their improvement, independent of experiment ; but there are few cases in which... 
