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

  • Fordyce, George, 1736-1802.
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.

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    the whole into a Filter, let the Liquor filtrate off, pour on by degrees a Pint of Water, let that filtrate off alfo, dry what remains in the Filter, it is the Calcareous Earth. Ninthly, To know the Proportion of Sand and Clay., Take what remains in the Filter after the firft Solution in the foregoing Operation, and by Elutriation feparate the Sand from the Ciay, dry and weigh them; If there be any Pyrites it will appear in the Sand. In the above Proceffes the principal Things to be attended to, are, £\ ' $ r , « . 4 * - , ’ l Whether there be any Metallic, or Alluminous Salts, as thefe are abfolute Poifons, and there- fore are to be decompofed by Quick Lime. Whether there be fuch a Proportion of Neu- tral or Earthy Salts as to be hurtful, in which Cafe, the Solution in Proce/s (Second,) will tafte Salt, a Soil containing them in fo large a Pro- portion, will hardly ever admit of Culture for Grain. Whether there be Calcareous Earth, and in what Proportion, as that afeertains the Pro- priety of applying any Manure containing it, and the Quantity cf that Manure. What