“A belief or a set of believes held and taught by a group “that is doctrine. Signature has been derived from two words. ‘at Sign and Nature’ that is signs of nature, Means belief that is signed by nature.
Dioscorides and galen stated that herbs can be used by herbalists to treat the patient. Paracelsus (1493-1541)was the first person who told that nature always presented the healing substances with some
