History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c36.s2.2

v1.c36.s2.2

In the work of Al-Bīrūnī (Sachau, 1910, 1, p. 182), the great Arabian scholar, it runs as follows : “They (i.e., the Hindus) use black tablets for the children in the schools and write upon them along the long side, not the broad side, writing with a white material from the left to the right”.