Several new roads have been constructed an this principle within the last three years. Part of the great north road from London by Hoddesdon in Hertfordshire—two pieces of road on Durdham Down, and at Rownham Ferry, near Bristol—with several private roads, in the eastern part of Sussex. None of those roads exceed six inches in thickness, and although that on the great north road is subjected to a very heavy traffic, (being only fifteen miles distant from London) it has not given way, nor was it affected by the late severe winter; when the roads between that and London became impassable, by breaking up to the bottom, and the mails and other coaches were obliged to reach London by circuitous routes. It is worthy of observation, that these bad roads cost more money per mile for their annual repair, than the original making of this useful new road. Improvement of roads, upon the principle I have endeavoured to explain, has been rapidly extended during the last four years. It has been carried into effect, on various roads, and with every variety of material, in seventeen different counties. These roads being so constructed as to exclude water, consequently none of them broke up during the late severe winter; there was no interruption to travelling, nor any additional expense by the Post-office in conveying the mails over them, to the extent of upwards of one thousand miles of road. Many new roads, and to a considerable extent, are projected for the ensuing season. Some of them are to be assisted by grants or loans from government, and it will be a great saving of property, and enable government to extend their assistance more effectually, if these roads be made in the most approved and economical manner. The unnecessary expense attending the making of new roads in the manner hitherto practised, is one great cause of the present heavy debt upon the road trusts of the kingdom. The principal part of the large sums originally borrowed, have been sunk in the useless, and in my opinion, mischievous preparation, of a foundation. This debt presses heavily on the funds of all the roads in England, and, in many cases, absorbs almost their whole revenue in payment of interest. In Scotland this pressure is still more heavily felt: indeed it is not of uncommon occurrence in that country, for creditors to lose both principal and interest of their loans to roads. This causes not only a great and unnecessary loss in the first instance, and a deficiency of means for ordinary repair, and maintenance of the roads, but it also discourages the formation of new roads. Were a better and more economical system generally adopted and acted upon, many great additions and improvements of the communications of the country would take place, from which, at present, the landholders are deterred, by fear of the extent of the expense, and the difficulty of obtaining loans of money.