Manures and the principles of manuring. Charles Morton Aikman
AS A MANURE.
INDIRECT MANURES—GYPSUM, SALT, ETC.
MANURING OF THE COMMON FARM CROPS.
ON THE METHOD OF APPLICATION AND ON THE MIXING OF MANURES.
ON THE VALUATION AND ANALYSIS OF MANURES.
| PART I.—HISTORICAL INTRODUCTION. | |||
| PAGE | |||
| Beginning of agricultural chemistry | 4 | ||
| Early theories regarding plant-growth | 4 | ||
| Van Helmont | 4 | ||
| Digby | 6 | ||
| Duhamel and Stephen Hales | 8 | ||
| Jethro Tull | 9 | ||
| Charles Bonnet's discovery of source of plants' carbon | 11 | ||
| Researches of Priestley, Ingenhousz, Sénébier, on assimilation of carbon | 11–12 | ||
| Publication of first English treatise by Earl Dundonald | 13 | ||
| Publication of Theodore de Saussure, 'Chemical Researches on Vegetation,' 1804 | 14 | ||
| Theories on source of plant-nitrogen | 15 | ||
| Early experiments on this subject | 16 | ||
| Sir Humphry Davy's lectures (1802–1812) | 17 | ||
| State of agricultural chemistry in 1812 | 17 | ||
| Beginning of Boussingault's researches (1834) | 21 | ||
| Publication of Liebig's first report to the British Association | 24 | ||
| Refutation of "humus" theory | 26 | ||
| Liebig's mineral theory | 26 | ||
| Liebig's theory of source of plants' nitrogen | 27 | ||
| Publication of Liebig's second report to British Association | 30 | ||
| Liebig's services to agricultural chemistry |
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