Immediately in the vicinity of Vista Rock is the south wall of the present reservoir. This wall occupies the whole of the middle of the park, and is a blank, uninteresting object, that can in no way be made particularly attractive. We have therefore, thought it necessary to bear this in mind in arranging the general plan, and have given a direction to the lines of drive leading this way from the lower part of the park, that will enable them to avoid the wall of the reservoir altogether.[17] The necessity for doing this has induced us to commence diverting the lines of drive at the south end of the grand promenade, which seems to offer a sufficient reason for so doing, and to lead them afterwards on their northerly course in such a way that they may pass naturally to the east and west of the reservoir. If any drive proceeded in the direction of the line of avenue, and at once crossed the ground proposed to be occupied by the lake, the reservoir would inevitably become the terminal feature of the lower part of the park, and this would be disagreeable. The skating pond will offer a sufficiently natural barrier to this direct mode of proceeding, and will furnish a reason for locating the promenade in its proposed position, and also for terminating it where suggested; and by carrying a road along the edge of the water, an opportunity will be given to lengthen out the drive commanding the principal views in this vicinity; the lake will also help to give a retired and agreeable character to the hill-side beyond, which is well adapted for pic-nic parties and pleasant strolls. Even if the reservoir did not occur in its present position, the conformation of the ground is such that the roads would naturally take, to a considerable extent, the direction indicated, leaving the centre of the park undivided by a drive. [17] NOTE, 1868.—In execution, the lines have been carried out as here indicated, and as the trees grow up the old square reservoir is less and less thought of as an obstruction in the composition.