( 60) 
ble. But of whatever form, its uses are the same ; 
to smouth the field after ploughing, to break and 
pulverize the clods, and to cover the seed. These 
uses sufficiently indicate the propriety of employ- 
ing two, in succession; one of heavy frame, with 
few and long teeth, like the Scotch brake; the 
other, of lighter construction, with more and short- 
er teeth. Our own experience leads us to believe; 
that the common harrow covers the seed too much, 
because small seeds will not vegetate ata depth 
greater than t!.ree inches. 
TEL. The Roller is a cylinder of heavy wood, turn- 
ing on gudgeons, or on an axle, and placed ina 
frame, to whichis attached a shaft; it is of different 
dimensions, but need not exceed that which may be 
drawn by one, or at most by two horses or oxen. 
‘This instrument is indispensable in good husbandry, 
yet it is rarely used in ours. Its offices are three- 
fold—to render loose soils more compact ; to break 
the clods on stiff ones, and on both, to compress the 
earth (after seeding) so that it be every where. 
brought in contact with the grain. It is also useful- 
_ Jy employed in reinstating the roots of meadow 
grasses, loosened and raised by the alternate freez- 
~ ing and thawing of the ground, and, with a similar 
view, may be passed over winter crops early in the 
spring. 
Its clod breaking and pulverizing property, is 
much increased, by surrounding the roller with nar- 
row bands of iron, two inches broad, three inches 
thick and six inches assunder; or by studding it 
