THE farmer’s manual. 
Go 
serving the due proportions, and regular succession 
in his variations. I shall conclude this remark ou- 
the roline of crops, with the following remark of Sir 
John Sinclair. “ The most effectual mode of increas- 
ing and preserving the fertility of weak soils, is, by 
having a division of them in pasture, thrown out of 
the usual rotation for 3 or 4 years; and then brought 
•in again, so that in the course of a 21 year’s lease, 
each division, in its turn, remains in grass for a pe- 
riod of time. Every part of a farm thus derives a 
proportional share of the advantage of being kept in 
grass which is preferable to th4 plan of preserving 
one part of a farm constantly in grass, and the other 
in tillage. On the whole, the convertible system of 
husbandry, where a large proportion of a farm is cul- 
tivated for grain, and the remainder for grass and 
green cro|)s, is in general to be recommended. By 
the grain crops, a sufficient quantity of straw is pro- 
vided as food for cattle, or for litter to be converted 
into dung ; whilst, at the same time, a fair profit is to 
be derived from the grain. The superior advantages 
of that system, can only be questioned by those who 
have had no advantages of obtaining accurate infor- 
mation. 
“ The.se departments of liusbandry, when conjoined, 
(i.istead of being kept separate,) reciprocally contri- 
bute to the support of each other’s prosperity.” 
Indian-Corn. 
The season is now past for planting your Indian- 
corn, and it is to be hoped that you have ploughed 
deep, upon a well sj)read coat of manure, or planted 
your corn with a shovel full of rich manure in the 
hill, or rolled your corn in plaster oi Paris, or put in 
a large spoonful of plaster into each hill ; but if you 
have neglected all these sureties tor a good crop, you 
may correct your error in this monlli ol .lune, by 
dressing your corn-hills at the several hoeings, with a 
handful of plaster, or of live, or leached ashes, which 
