In the matter of railway extensions, when the Caledonian took over the canal in 1867, there were practically no railways in the district through which it runs, and the coal and other traffic had, perforce, to go by water. But, year by year, a complete network of railways was spread through the district by independent railway companies, notwithstanding the efforts made by the Caledonian to protect the interests of the canal-efforts that led, in some instances, to Parliament refusing assent to the proposed lines. Those that were constructed (over a dozen lines and branches altogether), were almost all absorbed by the North British Railway Company, who are strong competitors with the Caledonian Railway Company, and have naturally done all they could to get traffic for the lines in question. This, of course, has been at the expense of the canal and to the detriment of the Caledonian Railway Company, who, in view of their having guaranteed a dividend to the original proprietors, would prefer that the traffic in question should remain on the canal instead of being diverted to an opposition line of railway. Other traffic which formerly went by canal, and is now carried on the Caledonian Railway, is of a character that would certainly go by canal no longer, and for this the Caledonian and the North British Companies compete. The third factor in the decline of the canal relates to the general consideration that, during the last thirty or forty years, important works have no longer been necessarily built alongside canal banks, but have been constructed wherever convenient, and connected with the railways by branch lines or private sidings, expense of cartage to or from the canal dock or basin thus being saved. On the Forth and Clyde Canal a good deal of coal is still carried, but mainly to adjoining works. Coal is also shipped in vessels on the canal for transport to the West Highlands and Islands, where the railways cannot compete; but even here there is an increasing tendency for the coal to be bought in Glasgow (to which port it is carried by rail), so that the shippers can have a wider range of markets when purchasing. Further changes affecting the Forth and Clyde Canal are illustrated by the fact that whereas, at one time, large quantities of grain were brought into Grangemouth from Russian and other Continental ports, transhipped into lighters, and sent to Glasgow by canal, the grain now received at Glasgow comes mainly from America by direct steamer.