This book is an edition of Colebrook’s translation of the Lilavati, a standard work on Hindu Mathematics, written by Bhaskaracharyya, a celebrated Mathematician and Astronomer who lived in the twelfth Century. The work forms the first part of a larger work of the author called the Siddhanta-siromani. The work, besides dealing with subjects which lie within the province of Arithmetic, also treats of subjects which properly belong to Algebra and Geometry. It comprises the four simple rules, extraction of the square root and the cube root, vulgar fractions, Rule of Three, interest, alligation, problems producing simple and quadratic equations, arithmetical and geometrical progressions, permutations and combinations, several properties of triangles and quadrilaterals, areas of circles volumes of spheres, cones and pyramids, solid content of excavations, and several other matters. Some of the problems solved evince a great deal of progress in algebraical investigations.