of the greater portion of the line, and superintended the actual construction. When the line became merged in the Grand Trunk he resigned his position of Chief Engineer, and received the most gratifying written testimonials from the Board of Directors as to his able administration of the important duties which had fallen to his share. Having formed a partnership with the present Sir Alexander T. Galt, the late Hon. Luther H. Holton, and the Hon. D. L. Macpherson, Mr. Gzowski for some years devoted himself entirely to the work of railway construction. On the 24th of March, 1853, the firm of Gzowski & Co. obtained the contract for the construction of the line from Toronto westward to Sarnia. This great work was prosecuted to a successful conclusion, and was attended with most gratifying pecuniary results to the contractors. The firm was then dissolved, and has since consisted of Messrs. Gzowski and Macpherson only, who continued to carry on large operations in the way of railway construction. Among other railway works constructed by the firm were the line from Port Huron to Detroit, in the State of Michigan, and the line from London to St. Mary's, in this Province. In connection with their own enterprises, and for the purpose of supplying railway companies with iron rails and materials used in the construction of railways, Messrs. Gzowski & Macpherson in 1857 established the Toronto Rolling Mills, which were carried on successfully for about twelve years. Steel rails having largely superseded the use of iron ones, the necessity for maintaining the establishment ceased to exist, and the works were closed up in 1869.