I-I U S BAND i! Y. 533 
Tt is remarked on thefe courfes, that, the fir ft exhibits 
the utility of repeated turnip-crops in the preparation of 
this kind of foil for grain-crops ; the produce of the oats, 
from the pulverization they effe&ed, being very great. It is 
added, that oats are moftly fown on newly-broken-up 
lands, but never with much fuccefs on fuch as are wet. 
The exhauftion of the foil in this courfe feejns not to have 
been great, though the oats were followed by potatoes, 
which are known to exhauft, as the fucceeding bean and 
wheat crops were both good, but more efpecially the lat¬ 
ter. It is obvious, however, he fays, that as turnips and 
cabbages cannot be produced to advantage on fuch cold, 
wet, lolls, without much manure ; that fuch rotations mult 
be the rnoll beneficial and proper on the drier forts of 
land, where fucli crops can be grown and fed on the 
grounds by live ftotk. And he adds, that the grofs pro¬ 
duct in the fecond courfe is not to be compared with the 
firft, as the potatoes, affording fix guineas, left no profit. 
The largenefs of the produce of oats feeriis to fhow the 
beneficial effects of cabbage-crops in preparing the foil. 
The inferiority of the wheat-crop, when compared with 
that in the firft of thefe courfes, is fuppofed to depend on 
\he want of manure. Notvtithftanding there are two crops 
of cabbages and one of turnips in this courfe, it appears 
to be profitable. It would feem, however, to be belt fuit- 
ed to the more dry kinds of foil. He ltares farther, that, 
in comparing the third courfe with the two that precede 
it, the exhaufting properties of potatoes are evidently 
much greater than thofe of either turnips or cabbages, 
from the inferiority of the oat-crop that followed them. 
And it is fuggefted, that wherever potatoes enter with a 
fnaall produce, expences more than abfor'o the value. 
Course XVI. 
c£. 
s. 
d. 
■i. Turnips 
3 tons 
O 
12 
6 
2. Beans 
4 qrs. 
5 
6 
0 
3. Oats 
8 qrs. 7 bufliels 
8 
9 
9 
Cabbages 
6 tons - 
I 
IO 
0 
3. Beans 
3 qrs. 6 bufhels 
5 
O 
0 
i . Wheat 
3 qrs. 2 bufhels - 
7 
27 
O 
17 
0 
9 
Per annum 
Course XVII. 
4 
12 
11 
t. Turnips 
Si tons 
O 
14 
0 
2. Barley 
5 qrs. 1 peck 
5 
O 
7 
3. Oats 
5 qrs. 5 bufliels 
5 
I I 
3 
4. Barley 
4 qrs. 
4 
IO 
0 
5. Beans 
3 qrs. ■ - - , 
4 
2 
0 
6. Wheat 
2 qrs. - 
4 
IO 
0 
24 
7 
IO 
Per annum 
Course XVIII. 
4 
I 
3 
t. Turnips 
3 tons 
O 
12 
0 
2. Wheat 
2 qrs. 7 bufliels 
6 
5 
0 
3. Oats 
4 qrs. bufhels 
4 
16 
1 
4. Wheat 
2 qrs. 3 bufliels -£ peck 
5 
5 
4 
5. Beans 
2 qrs. 
2 
38 
0 
6 . Wheat 
1 qr. 7 bufliels 
4 
5 
0 
' 
24 
I 
s 
Per annum 
4 
O 
2 
On thefe courfes it is fhown, that the refult of the firft 
difplays the advantage of beans over potatoes in refpeft 
to profit. In the fecond, the land being left foul and in 
a bad condition, (hows by the lightnefs of the wheat-crop, 
when compared with thole in other courfes, that great de¬ 
terioration had been produced by it. The laft courfe ex¬ 
hibits a ftill worfe practice, and that the land is left in a 
more exhautted and foul fituation by three wheat-crops. 
Such courfes can therefore never be had recourfe to with 
either the view of profit, or that of keeping the land in 
proper condition in refpeift to clean riels. 
Vol. X. No. 682. 
■ Course XIX. ‘ 
£ 
S. 
d. 
1. Potatoes 
io 5 bufhels 
2 
■1 3 
0 
2. Turnips 
4-§- tons . 
O 
18 
0 
3. Potatoes r 
136 bulhels 
3 
8 
0 ■ 
4. Ditto 
198 bufliels - , - 
4 
T 9 
0 
5. Beans 
2 qrs. - r 
2 
18 
0 
6. Wheat 
1 qr. 6 bufhels - ‘ - 
4 
O 
0 
18 
16 
0 
Per annum 
3 
2 
8 
Course XX. 
1. Potatoes 
185 bufliels 
2 
12 
6 
2. Cabbages 
5 tons - 
I 
is 
O 
3. Potatoes 
110 bufliels 
2 
15 
O 
4. Cabbages 
4 tons - - 
I 
0 
O 
5. Beans 
2 qrs. 2 bufliels 
3 
4 
O 
6. Wheat 
2 qrs. - - 
4 
IO 
O 
i 5 
6 
6 
Per annum 
2 
I I 
O 
Course XXI. 
1. Potatoes 
104 bufliels 
2 
I 2 
O 
2. Ditto 
126 bufliels 
3 
3 
O 
3. Ditto 
1 
O 
-5 
O' 
2 
8 
6 
4. Cabbages 
3 tons 
0 
IS 
O 
5. Beans 
1 qr. 7 bufliels 
2 
15 
O 
6. Wheat 
1 qr. 4 bufliels 
3 
IO 
O 
*5 
3 
6 
Per annum 
2 
IO 
7 
On thefe courfes it is ftated, that the deteriorating ef¬ 
fects of potatoe-crops are fully demonftrated. With ma¬ 
nure in the proportion already explained in the fourth 
courfe, the beans which fucceeded were, lie fays, • a very 
poor produce, and the wheat, though the only white crop 
in fix years, a miferable produce in a very good year. He 
adds, that in the fourth courfe, where there were two 
crops of wheat, with three of beans, the concluding wheat- 
crop afforded three quarters one bufliel, without any ma¬ 
nure, a difference that is highly ftriking. And that in 
the eighth, three crops of beans, and two crops of cab¬ 
bages, were followed with very good wheat, though cab¬ 
bages removed from the ground exhauft; but in thefe 
courfes, there are fcarcely any except fucceffive .wheat- 
crops, that exhauft the land fo greatly as potatoe-crops 
are found to do. With refpeft to the fecond courfe, it 
difplays little elfe, he thinks,, but a continued lofs; and 
the third affords a proof of the loweft decreafe of produce 
that can be fuppofed oil newly-broken-up land; befides, 
tlje foil is left fo foul and exliaufted, that the whole of its 
fertility from improvement, and the decay of the old turf, 
appears removed, it makes ftrong'ly, he thinks, againft 
potatoes, which can probably only be introduced with ad¬ 
vantage as a cleaning-crop, and where manure is readily' 
procured, and in great abundance. 
Course XXII. 
1. Potatoes 
100 bufliels - 1 - 
2 
IO 
O 
2. Beans 
3 qrs. 
4 
2 
O 
3. Potatoes 
142 bufhels 
3 
I I 
O 
4. Barley 
5 tons - - - 
I 
5 
O 
5. Beans 
a qrs. 3 bufliels 
3 
IO 
O 
6. Wheat 
2 qrs. 1 bufhel 
4 
is 
O 
19 
13 
O 
Per annum 
Course XXIII. 
3 
5 
6 
1. Potatoes 
xoi bufliels 
2 , 
IO 
6 
a. Barley 
4 qrs. 7 bufliels 
s 
7 
6 
3. Potatoes 
127 bufliels 
3 
3 
6 
4. Barley 
3 qrs. 2 bufliels 
3 
15 
O 
5. Beans » 
2 qrs. 7 bufhels - 
3 
!9 
O 
6. Wheat 
2 qrs. s bulhels 
5 
15 
O 
H 
TO 
6 
Per annum 
4 
I 
9 
6 U 
Course 
