Erasmus Darwin (1800). “Phytologia; Or, The Philosophy of Agriculture and Gardening: With the Theory of Draining Morasses, and with an Improved Construction of the Drill Plough”, p.556
Erasmus Darwin (1800). “Phytologia, or the philosophy of agriculture and gardening; with the theory of draining morasses and with an improved construction of the drill plough”, p.560
Erasmus Darwin (1791). “The Botanic Garden; a Poem, in Two Parts. Part I. Containing The Economy of Vegetation. Part II. The Loves of the Plants. With Philosophical Notes”, p.9