Lewis Metzler Clement (1837-1914)
1915 Obituary 
LEWIS METZLER CLENENT, born at Niagara, Ontario, on the 12th August, 1837, died at Haywards, California, on the 29th October, 1914.
In early life he was employed on the Montreal Waterworks under the late Mr. T. C. Keefer, and also on the construction of the Welland Railway and the Port Doors and Hamilton Railway.
In 1860 he was engaged on the construction of the Ohio and Mississippi Railroad, and from 1862 as Assistant Chief Engineer on the Central Pacific Railroad, until 1881, when he was appointed Chief Engineer.
He subsequently acted as Engineer to the Pacific Improvement Company, and as Consulting Engineer to the Southern Pacific Railroad and to the Leland Stanford Junior University. He designed the first electric railway patrol system over the Sierra Nevada, and introduced many improvements in the design and construction of steam, cable and electric railways and rolling-stock.
Mr. Metzler was elected a Member of the Institution on the 6th December, 1887.