"In the stretch of railway between these two points," said he, "the country is dotted with ironworks and collieries. Of these, some are being worked and some have been abandoned. There are no fewer than twelve which have small-gauge lines which run trolly-cars down to the main line. These can, of course, be disregarded. Besides these, however, there are seven which have, or have had, proper lines running down and connecting with points to the main line, so as to convey their produce from the mouth of the mine to the great centres of distribution. In every case these lines are only a few miles in length. Out of the seven, four belong to collieries which are worked out, or at least to shafts which are no longer used. These are the Redgauntlet, Hero, Slough of Despond, and Heartsease mines, t