S80 ON THE CONSTRUCTION OF 



The wall will sweat for several clays; but the water must be 

 constantly wiped oft' with fine, clean cloths, or the whole work 

 will turn red. A wall finished in this way may be washed with 

 soapand water; but when the plaister breaks, it is not easy to mend 

 it without the patch being visible. Stucco walls will answer 

 much better in America, and would be used here if we had 

 the plaister. 



5th. The roof is formed bv simply laying beams of wood 

 from wall to wall, in the shortest direction, three feet from cen- 

 tre to centre. Upon these beams are laid transverse pieces of 

 wood, three by two inches thick, to support the tiles or bricks. 

 We use twelve inch tiles, and lay the transverse pieces of wood 

 so that the tiles join in the middle. Our tiles are one and a half 

 inches thick, and are laid in two courses, well bedded. The up- 

 per course must break or cover the joints of the lower, thus, 



-<H 



The roof is then ready to receive the terrace. The transverse 

 pieces of wood are not nailed, but the spaces between are fill- 

 ed up with mortar and bits of brick tile &c. so that they can- 

 not shift. 



6th. The terrace is six inches thick, when finished, at the 

 middle, and about four inches at the outer walls, independent 

 of the tiles and wood. Wherever it is determined to deliver the 

 water, there must be gentle descents towards those places com- 

 ing to a narrow focus at the spout. The composition is broken 

 brick, the pieces about four cubic inches, or just as it happens 

 to break; they must not be too small, or the terrace will be li- 

 able to crack. 



Take the broken bits, dust and all, as they lie for use — measure 

 the whole and count the number of measures of any kind — spread 

 it one foot or thicker, on the ground — level and water it well, 

 turning it over at the same time. This deprives the brick of its 

 over absorbent power. 



For every three measures of broken brick, you must use one 

 of the same measure of good stone lime, giving only one third 

 at a time, watering and turning it every day for four days; 



