Report on Miscellaneous Implement Aioards at Derhj. 615 
■or for travelling on the roads. The driver's seat is fixed between 
the wheels and slightly behind the axles ; and the intention is so 
to balance the .apparatus over the axles, that the weight shall be 
entirely carried by the wheels, and as little as possible taken by 
the sole of the ploughs. Comparing the appearance of this plough 
with the best form of American Gang Plough, it appeared to me 
that the ploughs were too far behind the axle for securing minimum 
draught ; and if the ploughs could have been brought forward, 
the balance would be simpler, the draught lighter, and the 
driver could see the work whilst guiding his team. It is pos- 
sible that larger driving-wheels may be found desirable. They 
have half-rounded tyres three inches wide, withj loose metal 
bushes, which are readily renewed. The plough is strongly made 
and suitable for a variety of purposes. The price is 15/. 
Messrs. Perkins, Paternoster and Burlirgham, of Hitchin, have 
made considerable improvements in their Corn Screen. The 
original polygon form is now replaced by a circular frame, 
which is made to revolve eccentrically, thereby securing a much 
more efficient action, which is a combination of a rotary and 
longitudinal motion. Another great point is, that the frame is 
capable of carrying various screens, which are easily removed 
and replaced, and which cost from 12s. to 30s., according to size. 
The screens are stamped out of metal plate, so that the openings 
cannot vary in size. Wove wire screens are also used ; and a 
patent corrugated barrel, similar to that originally employed 
by Pernollet, can be supplied, which is useful for the removal 
of round seeds, and especially harifF (" Goose-grass " or 
" cleavers "). This screen has a number of indents on its inner 
surface. These receive the weed seeds, and carry them round 
till overcome by the force of gravity. They fall into a sloping 
receptacle in the lower portion of the screen, whence they are 
discharged. 
A Corn Elevator, which takes but little power, can be at- 
tached ; and for large operations, such as maltsters' business, it 
effects a considerable saving of labour. The great feature in the 
new screen is the circular frame, which receives any one of the 
screens, the exchange being made in a few seconds. The prices 
for machines with only one barrel range from 3/. 10s. to 11., ac- 
cording to size desired. Fig. 14 (p. 616) shows the machine com- 
plete (a), with the eccentric frame (c), and an additional screen 
for dressing barley (b). The Judges tried this screen. The 
material they had at command was not suitable, but it enabled 
them to decide that the screen was very efficient as to separation, 
but rather slow in operation. The following details as to con- 
struction may be of interest. The screen frame is of deal, simple 
as to construction, with cross braces at the side to give rigidity, 
VOL. XVII. — S. S. 2 T. 
