smooth road shows that single horses with lighter and less expensive vehicles would suffice where two horses are now required on the common roads; where strong stone pavements are required to resist the shock of heavy vehicles, and heavy vehicles propelled with double power to resist the battering of strong pavements, and the grinding and wear and tear of heavy and dirty roads. _Captain Vetch_, the engineer, who is extensively acquainted with the structural economy of towns, observes in a communication on the subject, that— “The other mode of avoiding the formation of mud is the substitution of wooden pavements; of the success of these I have little doubt, though for the present many failures have occurred, either from the foundation not having been truly and firmly laid, or from the blocks of wood not being massive enough. The greatest objection to wood pavements at present is the slipping of the horses, but this I believe might be obviated. The question, however, at present is to get rid of the street dirt, such as it is; and for that purpose I concur in opinion it would only be necessary in wet weather during rains that the street-cleaner should sweep the dirt into the kennels, and aid the water by stirring the mud, to carry off the material in a state of diffusion; in dry weather, the opening of pipes with hose attached would serve the same purpose as the rains, and at the same time aid the sewerage at the time most required. After a short but heavy fall of rain, the cleansing effect of the water is fully perceived: and if any means could be devised of saving the rain-water that falls on the houses and in the streets, so as to apply it in considerable quantities at intervals, it is probable that the rain-water would be amply sufficient for all the purposes in question.” Mr. Roe states, that arrangements were made with the water companies for supplies of water for the cleansing of the sewers in the Holborn and Finsbury district, but it was found that the ordinary supplies to the sewers sufficed, and those from the company were not used.