ART. XVII. 
Describing a Pair of Harrows and a Drac. 
{From Mr. Wywne.] 
To the Bath and Weft of England Agriculture Society. 
GENTLEMEN, 
NCLOSED I fend you a plan of a Harrow, of 
my invention, which feems to me to poflefs fome 
advantages over any I have yet feen. If you think 
it better than thofe in common ufe, you will, I dare 
fay, give it a place in your ufeful publication. 
I have examined Mr. Trerry’s harrow, (a de- 
{cription of which, with a plate, is given in the 43d 
article of your 4th volume.) Mott of the objetions 
which he mentions to the common harrow, ftruck 
me with as much force as they did him; whether 
mine obviate them better than his, it remains for 
you to determine. 
The advantages which my harrow feems to me to 
poflets over Mr. Taurry’s are thefe:-—Mr. TREFRY’s 
harrow, by once pafling over, works (I think im- 
perfe&tly) a piece of ground five feet eight inches 
broad, that being the interval between the extreme 
pins or fpikes; the ground that is worked by mine 
is feven feet fix inches broad, fo that three turns of 
mine will do as much work (wanting two inches) as 
four 
