The art of Simpling is as old with us as our British hills. It aims at curing common ailments with simple remedies culled from the soil, or got from home resources near at hand.
Since the days of the Anglo-Saxons such remedies have been chiefly herbal; insomuch that the word "drug" came originally from their verb drigan, to dry, as applied to medicinal plants.
These primitive Simplers were guided in their choice of herbs partly by watching animals who sought them out for self-cure, and partly by discovering for themselves the sensible properties of the plants as revealed by their odour and taste; also by their supposed resemblance to those diseases which nature meant them to heal.