PLATFOHM FIVE MILES LONG. Stairs and platforms will bo necessary inside the outer globe to provide for access to every part of the surface of the interior one. Room must also bo allowed to afford means of obtaining a view of a consider able extent of it; hence there should bo a space of '6oft between tho_ interior globe and the outer covering, which would give the latter an inside diameter of about C2oft. As the pedestal will be 60ft high the total altitude of the structure will not fall short of 600 ft,

A further word about the accommoda tions for spectators. In order to give them facilities of access to every parL of tho surface of tho globe it is proposed to con struct in tho space between the globe and its covering, but much nearer to the former, a broad platform, ascending spirally from the south to the north pole in twenty-four spires, with a maximum rise of one in twenty. The balustrade on the inner side of this ascending platform is to be three feet and three inches from the surface of the globe. Tho greater part of this huge spiral platform is to be lifted up in order to allow of an uninterrupted view of any desired portion of the earth's surface. The total length of the walk along it will bo five miles'. But it will not be necessary to walk. The breadth of tho platform will afford ample room for any auto-motor carriages that may bo deemed advisable. And, finally, it will not oven bo necessary to ride or to perform any other act of locomo tion. Mohammed, if he so elect, may go to the mountain either afoot or astride a vehicle. But, if he prefers, tho mountain will como to him. The whole enormous mass is to be rendered capable of rotating on its polar axis, in exact imitation of tho rotation of the earth.
