SOILS, MANURES, &c. 263 
quality, place it fo as to form a wall, 
of about four or five feet in height, and 
two feet thick, on the top of which lay a 
ftratum of calcareous earth, mixed with 
the a flies of burnt vegetables ; when it 
has remained in this ftate two or three 
years, it will become in excellent condi¬ 
tion, the fa Its placed on the furface will 
have defcended into the mafs by rains, and 
it will be found at the end of that period 
replete with nutritive matter; the vegeta¬ 
ble fibres, &c. with which it abounds, 
will be reduced into a more proper con¬ 
fluence than could have taken place under 
any different mode of treatment. 
s' 
It fhould afterwards be palled through 
a coarfe fkreen, or fieve, fix or eight 
months before it is wanted for ufe, that 
t 
its parts may be more perfectly incor¬ 
porated : it fhould likewife be frequently 
turned over, that the a£tion of the air 
upon 
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