464 Report on the Trials of Implements at Cardiff. 
intended to separate greybacks and other small seeds from the cob. This 
jumper is a wire-net screen worked on a principle radically wrong ; instead of 
a lateral motion sifting the material along the surfoce, the screen is jerked 
perpendicularly up and down, the result being that all the interstices were 
very soon choked with the cob, and the whole surface bristled, till it re- 
sembled a very rough towel in appearance. Very little seed was separated by 
the drum, and the amount delivered into the sack was absolutely nil. 
The exhibitor explained his total failure as due to the fact that the machine 
was new, and he had tested it beforehand with trefoil only, instead of red 
clover. 
The superiority of its workmanship, and the low power required to drive 
Messrs. Holmes's machine, made the award of the Judges obvious, namely: 
4231. Holmes and Sons 1st Prize, 10?. 
4492. Hunt and Tawell Highly Commended. 
Class VII. — Corn-Deessing Machines. 
The entries in this class were more numerous than in any 
other. As the list first stood it contained 32 implements ; a few of 
these were not sent in time for trial ; others were disqualified by 
the Judges, as being implements sent by one maker with so very 
trifling a difference in arrangement or construction that they 
were virtually duplicates. To have allowed the latter to be tried 
would have been equivalent to giving more than one chance to 
the same machine in a competition so close that the results de- 
pended to a great extent on small differences of manipulation. 
After this reduction, 22 machines remained to be tried. Messrs. 
Clare and Sherborn began the trials in this class on Wednesday, 
the 13th ; the working of the dynamometer and hand-power 
machine was superintended for Messrs. Eastons and Anderson 
by Mr. G. Neville. Each winnowing machine was in the first 
instance driven by a belt from the testing machine, travelling 
66 ft. per second ; the handle having been removed, a rigger to 
receive the belt was fixed in its stead, having its radius of the 
same length as that of the handle. The time and the power 
required to dress 130 lbs. of rough corn were thus ascertained : 
the machines selected for a second trial were not again tested by 
the dynamometer, but were worked in the usual way^by hand ; 
for the dynamometrical results were in this class felt to be of far 
less importance than the perfection of the separation effected, the 
goodness of the design and workmanship, and the moderate cost 
of the implements. 
Pains were taken to obtain an uniform bulk of corn for the 
experiment by mixing the grain that came from several of the 
non-finishing threshing-machines; half a bushel of this corn was 
run through each machine as a preliminary to allow adjust- 
ments to be made. The 130 lbs. of corn weighed off for each 
trial was placed in three scoops ready for filling; the machine, 
with its feed-board set open, was then run empty till the right 
