THIS standard treatise on Mechanical Railway signalling by Leonard Lewis was written at the turn of the twentieth century.
Since its original publication, now more than 100 years ago, much if not all of the mechanisms and practices described and illustrated have disappeared from the modern high-speed railways of Br.
Fraser, appeared in 1932.
H.
A third edition, revised and enlarged by J.
Originally published in 1910 as Railway Signal Engineering (Mechanical), a second edition followed in 1912.
THIS standard treatise on Mechanical Railway signalling by Leonard Lewis was written at the turn of the twentieth century