THRESHING MILLS. 47 
Construction is in use in many other places; those made 
in the Yale of Evesham are an imitation of them, and 
appear to me to be quite equal to the original. 
The barley drill used by Mr. Knight was made ia 
Hertfordshire, and is distinct from the turnip drill 
made in the north ; it lays in four rows at a time at ten 
inches distant. 
Horse hoes are used for the drilled turnips, but other 
crops are sown too close in the rows to admit of it, and 
there are no scarifiers attached to the Hertfordshire 
drill; the turnip horse hoe is a light plough with a 
mould board on either side, thus moulding two rows by 
being drawn between them rvith one horse, and will go 
over two or three acres per day. 
THRESHING MILLS. 
Mr. Knight has lately had one erected by Forrest, of 
Shiffnall, Shropshire; a three-horse power called, but 
they have generally used four horses in working it; the 
price was 88l. independent of the building ; it had 
only been tried for barley when I saw it, of which it 
will thresh out ten bushels per hour. It threshed about 
ten quarters of barley, September 28, 1807, in about 
eight hours. 
Mr. Knight has also put up a chaff cutter, worked by 
one horse; the knives, fixed in a wheel, forming nearly 
the radius of a circle, do their office by their rotatory 
motion; this machine is by-Burrell, of Thetford, 
in Norfolk ; the price 24l. at Thetford. It will cut, if 
the horse be put on briskly, near one bushel per mi- 
nute,or easily 4 or 500 bushels per day,and will be applied 
here 
