Note 167 — Chapter XXVIII · MILITARY OPERATIONS IN APRIL.

It may here be remarked that the difficulty of moving heavy ordnance over the bad roads and roadless tracts of India, painfully felt by the artillery officers engaged in the war, suggested to the East India Company an inquiry into the possibility of employing locomotives for such a purpose. A machine, called ‘Boydell’s Traction Engine,’ patented some time before in England, was tested with a view to ascertain the degree of its availability for this purpose. The peculiarity of this engine was, that it was a locomotive carrying its own railway. Six flat boards were ranged round each of the great wheels in such a way that each board came in succession under the wheel, and formed, for a few feet, a flat plankroad or tramway for the wheel to roll upon. It was supposed that the vehicle would move much more easily by this contrivance, than if the narrow periphery of the wheel ran upon soft mud or irregular pebbles and gravel. The motion of the wheel placed each plank down at its proper time and place, and lifted it up again, in such a way that there was always one of the boards flat on the ground, beneath the wheel. Colonel Sir Frederick Abbott and Colonel Sir Proby Cautley, on the part of the directors, tested this machine at Woolwich—where it drew forty tons of ordnance along a common road, uphill as well as upon the level. Another road-locomotive, by Messrs Napier, was tested for a similar purpose. The results were of good augury for the future; but the machines were not perfected early enough to be made applicable for the wars of the mutiny.