Sushruta (c. 600 BCE) is considered as the "founding father of surgery". His period is usually placed between the period of 1200 BC - 600 BC. One of the earliest known mention of the name is from the "Bower Manuscript" where Sushruta is listed as one of the ten sages residing in the Himalayas. Texts also suggest that he learned surgery at Kasi from Lord Dhanvantari, the god of medicine in Hindu mythology. He was an early innovator of plastic surgery who taught and practiced surgery on the banks of the Ganges in the area that corresponds to the present day city of Varanasi in Northern India. Much of what is known about Sushruta is in Sanskrit contained in a series of volumes he authored, which are collectively known as the "Sushruta Samhita". It is one of the oldest known surgical texts and it describes in detail the examination, diagnosis, treatment, and prognosis of numerous ailments, as well as procedures on performing various forms of cosmetic surgery, plastic surgery and rhinoplasty.