1831. The advantages of Chemical Science: (in an agricultural point of view,) illustrated by a series of observations on the nature and improvement of soils, and on the use and application of manures: principally abridged from Sir Humphry Davy’s "Elements of agricultural chemistry". South African Quarterly Journal. 1, 5 (Oct. 1831), 33–40. DOI:https://doi.org/10.21504/saqj.15.2597.