24 APRIL 1915, Page 23

The Arabic numerals make their first appearance in Europe in

manuscripts of the tenth century. Mr. G. F. Hill treats the queatiou of their subsequent changes of form in a study upon The Development of Arabi. Numerals in Europe Ex- hibited in Sixty four Tables (Oxford University Press, 7s. 6d. net). The difficult question of the ultimate origin of the numerals is not discussed; but their European history up to the sixteenth century is veep clearly shown in Mr. Hill's thousand classified examples.