$70 
priety of using yard dung, -while it 
retains the greatest quantity of 
these valuable materials. 
Picron’s pune is esteemed a very 
hot and powerful manure, and 
usually applied by measure; the 
common quantity is from forty to 
fifty bushels to the acre. No other 
kind of dung would produce the 
same efiect, for no other kind con- 
tains an equal abundance of vola- 
tile salts. 
Ponp and River MUD are ex- 
tremely uncertain in their effects. 
in several experiments the bengtit 
has been extremely great, in others 
but little good has resulted from it. 
These different effects are easily re- 
conciled ; for, in proportion as the 
water is resorted to by cattle, wild- 
fowl, &c. or receives the drainings of 
yards or towns, in that degree will 
the mud be good, and display its 
virtues. 
Sea weeps are used with uniform 
success whenever they can be ob- 
tained. In different parts of the 
coast, however, they have been 
found to produce fertility for very 
different periods. 
Ponp and RIVER WEEDS may be 
used with success betore the last 
ploughing for turnips, and spreading 
them as a manure for that crop. 
Mr. Coke clears the lake at Hol- 
comb every year for this purpose. 
Mr. Wagstatf values them load for 
load as dung. 
Hemp and FLAX WATER makes 
the grass grow doubly, where it is 
used aS a manure ian Yorkshire, 
which shews that all the putrid 
water of the pits should be used as 
manure. Mr. Billingsley carted flax 
water on his grass lands, and found 
the elfect superior to that of urine. 
BuRNT VEGETABLES have a near 
resemblance to the ashes produced 
ANNUAL REGISTER, 1806. 
by paring and burning, in their 
nature, property, and effects, A 
practice prevails in part of Lin. 
colnshire, of burning straw upon 
turnip land, just before sowing : 
from three to five tons to an acre 
are laid on, and evenly spread, and 
then set fire to; and it has been 
found superior to common dung. 
PLouGHING in GREEN cRops is a 
mode of husbandry which has been 
long practised with satisfaction in 
this kingdom, and is common in | 
many others. ‘The practice keeps 
its ground, though the success be 
not uniform. If growing vegetables 
turned down prove good manure, it 
can only be from their fermentation 
converting them into the food of 
plants. Care should be taken that 
they be completely buried, as the 
effect depends much on the execu- 
tion. Ploughing in green crops 
answers better for a summer crop, 
as turnips or tares, than for autumnal 
or spring crops. 
The seeond class of manures, or 
those which are usually purchased, 
the anthor divides into animal, ve- 
getable, and fossil ; and as this sub- 
division is not merely imaginary, 
the several substances are noticed in 
their respective orders, with obser- 
vations common to each kind. 
Nienur soi is to be had in 
quantities only in the neighbourhood 
of cities. In such situations it is 
largely used, and much experience 
has arisen from the application. 
‘Yhe common quantity for an acre 
is two hundred bushels. It is the 
best of all manures, and, if dry, the 
cheapest: it does well on all. soils 
and for all crops. it has been 
drilled along with rape-cake dust 
with much benefit, by Mr. Coke at 
Holkham. 
Bones are used to a considerable 
extent 
