Some three years ago Dr. Cantor, a Dane by birth, but an Army Surgeon in the anglo-indian service, died in India, leaving his property to be divided between the Society of Arts and Wellington College. Last year the Society of Arts devoted the proceeds of their portion of the bequest to three courses of Lectures, viz. One on International Law, by G. W. Hastings, Esq., barrister-at-law; another on Chemistry applied to the Arts, by Dr. Crace Calvert, and a third on Art applied to Industry. The Lectures comprised in this latter course form the greater portion of the present work; the additions consisting of two other Lectures upon the same subject, and which were read respectively at the Architectural Association and at the South Kensington Museum.