"The invaders were few and the country was too large and too populous. The waves of immigration from Turan were few and far between, and deposited on Indian soil adventurers, warriors, and learned men, rather than artisans and colonists. Hence the Muhammadans depended upon the Hindoos for labour of every kind, from architecture down to agriculture and the supply of servants. Many branches they had to learn from the Hindoos, as, for example, the cultivation of indigeneous produce, irrigation, coinage, medicine, the building of houses, and weaving of stuffs suitable for the climate, the management of elephants, and so forth."