Chap. IV.

BRICKS AND TILES.

715

Throughout France there are many varieties of pattern, and in laying their plain tiles, par-ticularly in Paris, they vary the arrangements; in some instances, a square plain tile is laid

K ‘ \ '■

Fig 601.

DIAGONALLY LAID TILES.

diagonally, in others they have undulatory or polygonal surfaces, forming channels to con-duct off the water, and producing a good effect.

The Tiles, which cover some of the abattoirs, are made in a similar manner to thosemanufactured in Burgundy; a concave tile is laid, with its position alternately reversed,

Fig. 602. FLAT TILES LAID SIDE BY SIDE.

and those which present a convex back, and form the outer surface of the roof, abut againsta cylindrical tile which covers the joint.

The Flat Tiles , one edge of which has a fillet, and the other a semicircular turn, seemto combine the use of the two tiles in the former example, and to produce a much better