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Brick^Making. 
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From the foregoing statement it is evident, that we are 
obliged to make our plates and rafters of the roof so much 
stouter and heavier than there is any occasion to do for 
slates, even the coarser sort ; and consequently this in- 
creased strength in the timber must add to the expense of 
the roof, supposing that the same thickness of wall be 
sufficient.” 
Brick'Making, — I add a few remarks, the result of my 
own observation, which may furnish some notions of the 
value of brick-earth. 
When my father died about 1789, he owned forty 
acres of land at Kentish town, then two miles from tl>e 
turnpike of Tottenham Court Road, London. It is now 
built over. He liad let out four acres of that land con- 
taining brick earth, at a price then considered greatly too 
cheap : viz. one hundred pound sterling per acre for the 
brick earth : the brick-maker paying 5/. sterling per acre 
for all the rest of the field that he occupied in brick-mak- 
ing ; and being bound to fill up the holes or excavations 
from whence the brick earth was taken, level with the rest 
of the field, within one twelve month after the brick earth 
was exhausted. The rubbish for this purpose was usu- 
ally procured from old buildings pulled down and repair- 
ed in London, brought as back loading. 
The bricks made there, were place bficks and grai/ 
stocks^ The place bricks being the outside bricks of the 
kiln, inferior, ill-burnt, soft, and used for the inside of 
walls. The grey stocks, being the bricks used about 
London, for common front-^vork. The colour a reddish 
brown. 
Malm- Stocks^ used for arches, were made partly near 
Brompton, and partly in Norfolk, of a finer kind of clay 
previously washed to separate the large particles of stone 
