OIL. 
alfo be — more ary, sca which - turnips bes 
never arrive at a fize 
d to 
we ought to make ourfelves acquainted with the fize and the 
fhape of the roots of fuch plants as are the objeéts of field 
hufbandry : when once we have obtained that neceflary 
Eoowide it will be an eafy matter to fuit the preparation 
of the foil tothe nature of the grain. It will alfo enable us 
to dire& the variations of our crops upon juft and rationa 
ae aa 
» ~ But in Mr. Stovin’s trials with oil-compoft in 1769, the 
refults were thefe : 
Produce. 
hb sd, . BP. 
«6 One acre, fown wit ores and 
manured with oil-compoft ah o18 © 5 5 © 
ley, and manured with cat 300 4 3 2 
dung, twelve loads, worth - 
Difference + I 2 
And the rae st was A eee and better corn than 
r 1770, unged acre produced of 
Pics er acre, of ditto, two quar- 
nd in ee year 1771, the fee lands were 
and the produce was greatly in favour of 
This lait experiment, being contrary to 
made with a view to deter- 
ings are cima in the year. 
retain its vigour longer. It will here = prope: to obferve, 
that ay experimental lands were in a common field, which 
had been many years under the plou 
Alfo i Mr. Townley’s experiments, they were as below. 
“In ch ae of 1770, he prepared a piece of ground for 
onions, It was laid = into fix beds of equal fize, and all 
fown at the fame ti 
« Over two of them, the oil-compoft was {cattered in a 
very moderate quantity 5 3 over the other two, pigeon-dung ; 
and over the ieee gr two, fome of his ha whic 
he efteems one of t eft manures, for moft vegetables, 
Te is compofed of vegetable fubftances 
of the eapael perfected the fineft 
An a ss nm = year one part of a field of wheat ex- 
12 
pofed to the north-eaft winds, which that {pring continued 
to blow for a month or five weeks, a appeared very poor 
and languid at the - tillering. Over it he ordered 
fome of the oil-compo e fown with the hand, which 
not only recovered, but “alfo pufhed forwards the wheat 
plants in that ~ of the field, fo as to make them little 
o the re 
his own ee : 
crop. 
anfwered exceedingly w 
(1771), both upon bea and his onions ; ; and has the fneft 
crops of thofe vegetables he ever faw any where upon the 
fame compafs of ground.’ 
r. Roebuck, in trying this manure in gardening, planted 
twelve diese that lay between his afparagus beds, with 
cauliflower plants; each alley took up about thirty plants. 
One of the alleys he fet saa for an experiment with the 
oheonee Laie ared as a 
‘ About a handful of i. compoft was put to the root 
itt 
ate the heat, and neutralife en acri- 
mony of the falt 
But “in the September following this unfuccefsful ex- 
beatae he planted the fame alleys with early cabbages. 
in this trial 
For the cabbages that grew upon the 
alley, which in May had received the compoft, were larger, 
and in all refpe&ts finer, than the others. The idea that he 
entertains of the compoft is, that when meliorated in the 
earth, it is capable of giving a richnefs and frefhnefs to it. 
Upon this principle he wauid recommend it to gardeners as 
a fubje&t worthy of further trials. 
Although thefe i aa aay fufficiently fhew, that fub- 
ftances of this fort may be ufed with advantage in the way 
of manures, their expence ee in moft cafes prevent their 
being made ufe of to any great exten 
IL- at hb fuch as is ronttituted of oil with other ma- 
terials. The compolition of a manure ef this kind, which 
has been faid to be highly beneficial, a the expence for 
one acre of land in 1792, is thus ftated: 
£ s. d, 
Rape or train-oil fix gallons, at 2s. oe - om 90 
Sea-fand fix bufhels, at oe - o 10 
Coarfe falt two buthels, - - o 20 
Malt coombs 24 bufhels, a “ad. - = 090 
17a 
In the pi eas of which, it is advifed to fpread the 
coombs on the floor about four inches thick, then to {prinkle 
the falt as level as offible, throwing on half the quantity of 
fand and ha 
turning it an 
of the oil and fand as before, turning it well ull thoroughly 
mixed, and then throw the whole into a heap for ufe. On 
this it is fuggefted, that as the prolific quality of oil-cake 
is only in proportion to the oil it contains, this compofition 
cat be preferable, having a much greater quantity of oil 
in 
