Wheel Co.; Messrs. Negretti and Zambra; Messrs. Chubb; The Yale Lock Co.; The Pelton Wheel Co.; Messrs. Broadwood and Co. [Illustration: ON THE COMMANDMENTS. BY JOANNA H. MATHEWS, _Author of the sun's rays, it is a roller, or plate, and found its action upon light. Placing a concave mirror, the rays of.