Would the dust be increased or diminished by this alteration?—I consider, that upon a well made stone road, with the same care of cleansing and watering that is given to the streets, that the annoyance from dust would be infinitely less; and a road is more susceptible of retaining the water than pavement. What would be the proportion of the annual expense between the paved street and the road?—Taking seven years, during which time I calculate that the pavement gets worn out, I should think the annual expense of the road would not be one fifth part, because in that seven years the whole value of the pavement is nearly lost. What would be the effect produced upon the necessity of raising the road for the purpose of alteration of the pipes and other works under the street?—At present, when this operation is necessary, a paviour, whose wages are from five to six shillings a-day, is required. Were the streets converted into stone roads, a labourer at eighteen-pence a-day would perform the same service; and by due care in laying the materials on one side, and the earth on the other, the injury to the road would be extremely small, and the spot would very soon become obliterated; whereas in raising a part of a paved street it is quite impossible ever to unite the piece so raised with the rest of the pavement. Supposing the pavement to be converted into a road, in that case, would it be necessary, when any pipe was repairing, to stop up the way to prevent carriages and horses passing?—Certainly not more so than at present, as that circumstance must always depend upon the width of the street. In very narrow streets, where the pipe lies in the centre, a large opening is necessary; it would follow as a matter of course that the street must be stopped; but upon large streets one side would be left free. Would not a repair be more rapidly executed, supposing the way to be a road instead of a street?—Were the streets converted into roads, the repair of the roads would be almost unknown to the public, and no stoppage whatever would take place; the repair of such roads would be limited to a one-inch coat at a time, which would scarcely be known to persons passing in carriages, and the great inconvenience at present constantly felt in every part of this large metropolis by the necessity of repaving the streets would cease. You assume that the roads for the streets in London must be made with granite?—Most assuredly, I should never recommend any other material to be made use of for the roads in the town. Mr. _William MᶜAdam_, further Examined.