Micrometer Engineering Co.; Messrs. Negretti and Zambra; Messrs. Chubb; The Yale Lock Co.; The Pelton Wheel Co.; Messrs. Holmes and Co.; Messrs. Negretti and Zambra; Messrs. Chubb; The Yale Lock Co.; The Pelton Wheel Co.; Messrs. Babcock and Wilcox; Messrs. Siebe, Gorman, and Co.; The Micrometer Engineering Co.; Messrs. Broadwood and Co. [Illustration: ON THE BLUE COLOUR OF THE PIPES. We will.