The furnace which he employs for drying his moulds is about 14 feet long, 12 feet high, and 12 feet broad.

When it is raised to its highest temperature, with the doors closed, the thermometer stands at 350 degrees, and the iron floor is red hot.

The workmen often enter it at a temperature of 340 degrees, walking over the iron floor with wooden clogs, which are of course charred on the surface.

On one occasion Sir F.Chantrey, accompanied by five or six of his friends, entered the furnace, and, after remaining two minutes, they brought out a thermometer which stood at 320 degrees.

Some of the party experienced sharp pains in the tips of their ears, and in the septum of the nose, while others felt a pain in their eyes..