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A. E. Hunt Allegheny Allegheny County Allegheny river American Society amount amperes brick building carbon cent circuit Civil Engineers Committee conductor connected construction converter cost cylinder Date of Membership Dempster difference of potential discussion dynamite dynamo elastic limit electric electromotive force feet Fifth Ave furnace glass H. D. Hibbard Harper's Ferry heat Heliometer highways improvement inches ingot iron J. A. Brashear Johnstown Keystone Bridge Kirk L. B. Stillwell lamps load M. J. Becker machine masonry material McGiehan measurements meeting metal Metcalf miles Monongahela river paper Pennsylvania Pennsylvania railroad phonograph pier Pittsburg pounds practice present President Prof rail railroad riprap river road directors rock sandstone Secretary Sept South Fork Dam specimens steel stone stream T. P. Roberts tion township volts W. L. Scaife weir weld wire