10 MARCH 1888, Page 44

On Light. By Professor G. G. Stokes. (Macmillan and Co.)—The

volume before us contains the Barnett Lectures delivered at Aberdeen during the years 1883, 1884, and 1885. Comment on them would be superfluous ; and any means of increasing their fame or widening their grasp on the general reader is worthy of praise.—We have also received On the Beneficial Effects of Light, a publication of the third and concluding course of the above lectures in a separate form.