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BOOK XI.

where the straight end of the hook was driven into it when it was lifted outof the copper mould; the other jaw of the tongs, which has no tooth,squeezes the cake, lest the tooth should fall out of it; the tongs are one anda half feet long, each ring is a digit and a half thick, and the inside is a palmand two digits in diameter. Those cranes by which the cakes are lifted outof the copper pans and placed on the ground, and lifted up again from thereand placed in the furnaces, are two in number—one in the middle spacebetween the third transverse wall and the two upright posts, and the other in

A —Crane. B —Drum consisting of rundles. C—-Toothed drum. D —TrolleyAND ITS WHEELS. E—TRIANGULAR BOARD. F-CAKES. G-CHAIN OF THE CRANE.

H —Its hook. I —Ring. K —The tongs.

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the middle space between the same posts and the seventh transverse wall-The rectangular crane-post of both of these is two feet wide and thick, andis eighteen feet from the third long wall, and nineteen from the second longwall. There are two drums in the framework of each—one drum consistingof rundles, the other being toothed. The crane-arm of each extends seventeenfeet, three palms and as many digits from the post. The trolley of eachcrane is two feet and as many palms long, a foot and two digits wide, and ap alm and two digits thick ; but where it runs between the beams of thecrane-arm it is three digits wide and a palm thick ; it has five notches, m