Elements of agriculture and vegetation. To which is added, an appendix, for the use of practical farmers / [George Fordyce].

  • George Fordyce
Date:
1796
Catalogue details

Licence: Public Domain Mark

Credit: Elements of agriculture and vegetation. To which is added, an appendix, for the use of practical farmers / [George Fordyce]. Source: Wellcome Collection.

    91/122 (page 87)
    • 'N t 87 ] Thofe foluble in Water, that are found irj all rich Soils, are Mucilage ; Nitrous Ammoniac ; Nitrous Selenites ; Common Ammoniac ; Fixt Ammoniac ; Thefe Subftances all get into the Plant along with the Water 5 and the Salts are found in the Juices of the Plant, unchanged. A Mucilage is alfo found, but very different from that contained in Soils. Therefore a Plant may be nouriihed by pure Water and Air alone ; but it will be more luxuriant, if it alfo abforbs, and digefts, a Quail- tity of Gelatinous Mucilage, Richness of the Soil depends on Firft, A proper Degree of Tenacity, which is procured by (a) A Mixture of Clay with Sand, or any other Earth, fo that it fliall contain between one Fourth of Clay, and three Fourths. (£) Mucilage, which gives Friability to the Clay, and Tenacity to Sand. (c) The Quality of the Clay, the more difr fufible it is in Water, it gives the better Texture £o the Soil.. F 4 Secondly^