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Fig. 2. This figure shows the elevation, or front view of a Fire-place on the common construction. See page 341.
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Fig. 3. This Figure shows how the Fire-place represented by the Fig. 1, is to be altered in order to its being improved.
A B is the opening in front,—C D, the back, and A C and B D, the covings of the Fire-place in its original state.
a b, its opening in front,—i k, its back,—and a i and b k, its covings after it has been altered, e is a point upon the hearth upon which a plum suspended from the middle of the upper part of the breast of the Chimney falls. The situation for the new back is ascertained by taking the line e f equal to four inches. The new back and covings are represented as being built of bricks;—and the space between these and the old back and covings as being filled up with rubbish. See page 342.
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Fig. 4. This Figure represents the elevation or front view of the Fire-place Fig. 3. after it has been altered. The lower part of the door-way left for the Chimney-sweeper is shown in this Figure by white dotted lines. See page 344.
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Fig. 5. This Figure shows the section of a Chimney Fire-place and of a part of the canal of the Chimney, on the common construction.