Irish Railways: The Atmospheric Railway; A Letter to the Right Hon. Lord Viscount Morpeth. E-book. Formato PDF James Pim   -  Forgotten Books, 2017  - 

But single lines of Railway cannot be worked by locomotive power to their full extent, with out incurring danger from collisions, the con sequences of which are of a fearful character, so much so as to render their adoption highly questionable.