History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c39.s2.5

c39.s2.5

The Vyasa-bhashya helps us to a clear mental representation of the details of this process. As the owner of many fields can irrigate, from a field which is already flooded, others of the same or lower level, without forcing the water thereto with his hands, and merely by making an opening in the barrier or dyke, on which the waters rush in by their own force;—or further, as the same person cannot force these waters, or the earthy matters held in solution therein, into the roots of the rice plants, but only removes the obstructive grasses and weeds, on which the fluids of their own power enter the roots;—such is the action of an effectuating condition added to a sum of material causes or conditions.