Note 40 — Chapter IV · OSWESTRY TO NEWTOWN.
Reading edition
A mysterious measurement arrived at, according to Mr. F. S. Williams, an authority on the history of railway construction, on no scientific data, but due to the fact that the old “way leaves,” or wooden rails, put down to economise the wear and tear of colliery trains, were so adapted to admit of the wagons passing through five feet gateways.