I am also the inventor of the back pedal braking and coasting bicycle hub, which has been in general use for many years. My application for a basic patent covering this hub has been pending in the Patent Office for twelve years, held back nine years by interference litigation in the Patent Office, owing to an effete interference system which has no apology to offer to justify its existence. Turbine Engines In turbine engines I have made some important improvements. In one the engine is reversible by the movement of a single lever in either direction. In a second the steam is utilized a second time under conditions doubling the original efficiency, and balancing the end thrust perfectly. In a third improvement the engine develops more than three times as much power as any other turbine of its class occupying the same floor space. Patents allowed but not yet issued. I figure that ocean steamers should furnish a large field for these machines. Respectfully submitted, (Signed) WILLIAM ROBINSON. 276 Stuyvesant Ave., Brooklyn, N.Y. Part II WILLIAM ASHBRIDGE BALDWIN The progressive ideas of William Ashbridge Baldwin were responsible for the first tests of the closed track circuit under actual operating conditions. It was through his confidence in this invention of Dr. William Robinson that the possibilities of the application of the closed track circuit to the safety of train operation was proved. Mr. Baldwin, at the time the first signal installations were made at Kinzua, Pa., and Irvineton, was general superintendent of the Philadelphia and Erie, now part of the Northern Grand division, Central region, Pennsylvania System, and because he made possible the development of signaling to its present standard by his interest and active co-operation in the 70's in making train movements safer, it is but fitting that he should be given a place in the memorial to Dr. William Robinson. [Illustration: _Tracks and Location of Electric Signals Dr. Robinson's Patent Kinzua Pa. 1872-1873._] [Illustration: _Tracks and Location of Electric Signals Dr. Robinson's Patent Irvineton 1872-1873._]