The Thirteen Books of Euclid's Elements Translated from the Text of Heiberg with Introduction and Commentary . By T. L. Heath, C.B., Sc.D. Cambridge, University Press. 1908. Three vols.; Differential and Integral Calculus . By Daniel A. Murray, Ph. D., Professor of Applied Mathematics in McGill University. New York, Longmans, Green and Co. 1908. Pp. xviii +491; An Elementary Treatise on the Differential Calculus Founded on the Method of Rates . By William Woolsey Johnson, …