Tracts on practical agriculture and gardening. [electronic resource] : In which the advantage of imitating the garden culture in the field, is fully proved, by a seven years course of experiments. Particularly addressed to the gentlemen farmers in Great Britain. With observations made in a late tour through part of France, Flanders, and Holland. Also, several useful improvements in stoves and green-houses. To which is added, a complete chronological catalogue of English authors on agriculture, gardening, &c. By a country gentleman.