those who do, few manage to finish high school. Therefore, very few are eligible to attend institutions of higher education, where the high rate of attrition continues. Members of agrarian tribes like the Gonds often are reluctant to send their children to school, An academy for teaching and preserving Adivasi languages and culture was established in 1999 by the Bhasha Research and Publication Centre. The Adivasi Academy is located at Tejgadh in Gujarat. Economy Most tribes are concentrated in heavily forested areas that combine inaccessibility with limited political or economic significance. Historically, the economy of most tribes was subsistence agriculture or hunting and gathering. Tribal members traded with outsiders for the few necessities they lacked, such as salt and iron. A few local Hindu craftsmen might provide such items as cooking utensils. In the early 20th century, however, large areas fell into the hands of non-tribals, on account of improved transportation and communications. Around 1900, many regions were opened by the British government to settlement through a scheme by which inward migrants received ownership of land free in return for cultivating it. For tribal people, however, land was often viewed as a common resource, free to whoever needed it. By the time tribals accepted the necessity of obtaining formal land titles, they had lost the opportunity to lay claim to lands that might rightfully have been considered theirs. The colonial and post-independence regimes belatedly realised the necessity of protecting tribals from the predations of outsiders and prohibited the sale of tribal lands. Although an important loophole in the form of land leases was left open, tribes made some gains in the mid-twentieth century, and some land was returned to tribal peoples despite obstruction by local police and land officials. In the 1970s, tribal peoples came again under intense land pressure, especially in central India. Migration into tribal lands increased dramatically, as tribal people lost the titles to their lands in many ways – lease, forfeiture from debts, or bribery of land registry officials. Other non-tribals simply squatted or even lobbied governments to classify them as tribal to allow them to compete with the formerly established tribes. In any case, many tribal members became landless labourers in the 1960s and 1970s, and regions that a few years earlier had been the exclusive domain of tribes had an increasingly mixed population of tribals and non-tribals. Government efforts to evict nontribal members from