Are you of opinion there exists any necessity for limiting the number of horses in carts and wagons, upon roads where there are weighing-machines?—I am of opinion not; and even doubt the propriety of calculating the gate-toll by the number of horses which draw the carriage. Upon private or parish roads, where no machines are erected, there seems, however, no other mode of regulating or preventing excessive loads being carried, to the ruin of the roads, than limiting the number of horses; but in case of the practice becoming general, which already prevails in many of the towns in the middle of England, of there being a weighing-machine, kept by a cottager, at all the principal entrances at the town, at which he is authorized (by the local magistrates, I believe,) to collect a small toll for each weighing, for those who voluntarily apply to him, by which means all loads passing into and out of such towns, may be, and the greater part of them are now, weighed; and if this were adopted in the environs of London, (with the addition of a yard and a warehouse, where a carter who has inadvertently taken up too large a load, either of dung, furniture, or other articles, of the weights of which he could not be accurately informed, may learn the same; and where, upon the result of this weighing, if it should be discovered that he had much too large a load, he could there throw off and deposit a part of it, either to abandon it if of small value like dung, or to take it up from the warehouse, at a future time,) these entrance weighing-machines would remove the only valid objection to weighing the loads of manure going out of London, by which the roads are at present more cut up and destroyed, than by any other description of carriages.