A reaction, as has been seen, followed the morbid enterprise of 1846. Its results, however, have endured to the present hour. In 1845 the United Kingdom possessed only two thousand four hundred miles of iron way. The capital invested upon these was only eighty-eight millions. Before 1850, the capital had increased to two hundred and thirty millions. To-day the aggregate miles of the railways of the United Kingdom are little, if at all short, of twenty thousand. The expenditure has been six hundred and thirty millions. The gross annual income is sixty millions. In order to appreciate with approximate accuracy the part played by the steam locomotive in the creation of nineteenth century wealth in England, or to define with practical distinctness that familiar term 'the railway interest;' it is necessary to examine this matter more in detail. In 1855 the total of capital represented by the United Kingdom railways was £297,584,709. In 1894, the latest date to which the Board of Trade returns are published, the total was £985,387,855. After forty years, therefore, the railway investments of these Islands had increased by £687,803,146. Another chief source of national wealth and industrial employment during this reign has been provided by mining enterprise. In respect of the money value of each, what are the relations which the yield of subterranean labour has borne to the enterprises of steam upon the surface of the earth? In 1855 the value of all the minerals brought to the light of day is expressed by the figures £29,579,001. The figures referring to railways for the same year were, it will be remembered, seen to be £21,507,599. This comparison between the two shows therefore that in 1855 the mines exceeded the railways in value in round numbers, by eight million pounds. The exact figures of the excess were £8,071,402. Forty years later this balance is more than redressed. In 1894 the total of mineral wealth was £80,900,453. The entire railway receipts were £84,310,831. In other words, the surface opulence of the United Kingdom had not only made good its inferiority to the subterranean wealth, but had advanced beyond that rival, in round numbers, by three and a half million pounds. The exact figures were £3,410,378.