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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1858 Excerpt: ...accuracy, the edges being rounded and the sides not always parallel. In military works they were often used alternately with flint and stone, and for turning arches of doorways. For this purpose the two sizes were sometimes combined, in order to bond the work, or, the bipedales tegulce, or two-foot tiles, as Vitruvius calls them, and the sesquipedales, or tiles of one and a half feet. The dimensions of the bricks found in Sicily varied from two palms six inches to one palm nine inches in length. Those of Treves were one foot Vol. n. 1 De Re RusticA, vi. 36, 12. three inches broad, one and a quarter inches thick; others from Civita Vecchia, in the Museum of Sevres, measured 0-65 long by 0-5 thick. The general size of the Roman bricks was 15 x 14 inches by two inches thick. The hypocausts had the pillars of their floors formed of bricks, from seven or eight inches to ten inches square, bessales, and sometimes of two semicircular bricks joined at their diameter, and so forming a circle.1 Occasionally the upper bricks diminished in size, in order to give greater solidity to the construction. The upper floor bricks, or tiles, were from eighteen inches to twenty inches square, and formed the floor of the laconicum. All these were laid with mortar.2 The great building at Treves, called the palace of Constantine, is built of pentadora burnt bricks, 15 inches square and 1 inches thick.3 Baked bricks, called cocti or coctiles, were in general use. Clay, which was either whitish or decidedly red, was preferred; and, as is evident from inspection, was well ground and mixed with straw. It was then kneaded and stamped out from a frame or mould of four boards. The bricks then went through the usual process of drying in the brick-field, indeed some ...

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