[ 34] 
atmofphere, calculated to aflift vegetation on the pre- 
fent, as well.as future crops; this appears clearly 
from the effect produced on the broad-caft: oats 
before-mentioned,’and the following obfervation on 
a potatoe crop will likewife fupport the opinion:— 
A foul piece of poor land was planted with potatoes 
in two different ways: the one part, in the common 
lazy-bed method; the other ‘part, in drills of two 
rows at a foot afunder, and three feet intervals left 
between to be worked with the common plough, 
which interval was three times:ploughed, and once 
hand-hoed, during the growth of thecrop. A part 
of the fame field, between the two crops of potatoes, 
was dunged in the fame proportion as the potatoe 
ground, and kept clean by three fummer-ploughings, 
and feveral harrowings. The drilled potatoes were 
by far the beft crop, though planted with only two- 
thirds the quantity of feed. The next year the fame 
field was fown with barley. ‘The drilled potatoe part 
produced by much the beft and cleaneft crop; the — 
next beft crop was on that part which bore the po- 
tatoes in the common mode of management, and the 
fammer-fallowed part, which bore no crop the pre- 
ceding year, was, contrary to every body’s expeéta- — 
tion, the worft of the whole; this experiment then © 
proves that fimply pulverizing the foil mechanically, 
and manuging, will not equal the advantage of a 
horfe-hoed-crop, and fpeaks very much againft fum-— 
mer-fallowing on light foils. 
In 
