Entitled: "A masseur massaging the arm of a man who is sitting on a low stool, with a leg immersed in a brass basin." A Ghulam or bath attendant of the Shudra caste. To a customer in a Mughal-inspired bath-house he is providing snehana and svedana: these are two Ayurvedic procedures, of which the former includes external oil massage to nourish the "nervous system", while the latter applies hot steam to flush out the "toxins", 1825. Ayurveda is a system of medicine with historical roots in the Indian subcontinent. The main classical Ayurveda treatises begin with legendary accounts of the transmission of medical knowledge from the Gods to sages, and thence to human physicians. Ayurveda therapies have varied and evolved over more than two millennia. Some scholars assert that Ayurveda originated in prehistoric times,and that some of the concepts of Ayurveda have been discovered since the times of Indus Valley Civilization and earlier.