rested the first layers of the masonry, the stones of which were
bound together by hydraulic cement, with irresistible tenacity.
The workmen, after laying the stones from the circumference to
the center, were thus enclosed within a kind of well twenty-one
feet in diameter. When this work was accomplished, the miners
resumed their picks and cut away the rock from underneath the wheel
itself, taking care to support it as they advanced upon blocks of
great thickness. At every two feet which the hole gained in depth
they successively withdrew the blocks. The wheel then sank little
by little, and with it the massive ring of masonry, on the upper
bed of which the masons labored incessantly, always reserving some
vent holes to permit the escape of gas during the operation of
the casting.

This kind of work required on the part of the workmen extreme
nicety and minute attention. More than one, in digging
underneath the wheel, was dangerously injured by the splinters
of stone. But their ardor never relaxed, night or day. By day
they worked under the rays of the scorching sun; by night, under
the gleam of the electric light. The sounds of the picks against
the rock, the bursting of mines, the grinding of the machines,
the wreaths of smoke scattered through the air, traced around
Stones Hill a circle of terror which the herds of buffaloes and
the war parties of the Seminoles never ventured to pass.
Nevertheless, the works advanced regularly, as the steam-cranes
actively removed the rubbish. Of unexpected obstacles there was
little account; and with regard to foreseen difficulties, they
were speedily disposed of.

At the expiration of the first month the well had attained the