CANALS AND ItAIL-ROADS. 311

From this Table, we find that a loco-motive engine, effecting a constant averagevelocity of six miles an hour, will, in ten hourson a llail-road, perform the work of four horsesemployed in dragging goods at the rate of twomiles an hour upon a canal; and, as this rateof speed on a canal is that when the perform-ance of a horse is a maximum, we derive theconclusion — That so long as the expence of oneloco-motive engine does not exceed that of fourhorses, and their attendants; then goods can beconveyed ivith the same expenditure of motivepoiver at six miles an hour upon a Rail-road,that they can be conveyed at two miles an hourupon a canal.

I have elsewhere stated that, in general, oneloco-motive engine, in certain districts, may beestimated to cost as much as three horses ; butthe comparison was made with horses uponKail-roads, where one attendant to each horseis suflicient. On canals it will be different, asthe attendants upon each horse and boat aregenerally three ; — the relative cost of loco-motive engines will therefore be diminished,and their utility, in comparison with horseson canals, proportionably increased.

But this is not the only benefit resultingfrom the application of steam power to Rail­ ways , viz. that goods are conveyed with the