410 Report on the Trials of Implements at Cardiff. 
the travelling wheels of the thresher. This time the dynamometer 
was raised so that its pulley of 4 feet 6 inches diameter was at the 
ordinary height of the fly-wheel of an engine ; revolving 130 
times a minute, it delivered the belt at the regulation speed of 
1884 feet a minute. 
Another advance in method of trial was the re-threshing of all 
straw and cavings, thus ascertaining by direct experiment the 
exact quantity of corn left by the machine on trial, instead of 
leaving it to be estimated by the Judges. The machine for 
re- threshing !was driven by a portable engine, and placed to the 
right of the machines on trial ; it was necessary to put this ma- 
chine forward to be in line with the straw as it came from the 
first threshing, and in future trials it will be desirable to 
extend the shed roof, as shown in Fig. 3, to protect this ma- 
chine and the straw, before re-threshing, from the weather. An 
awning as an extension of the roof on the other side of the shed 
is also desirable to keep the driving belt dry, in place of the 
troublesome A shaped covering that had to be shifted by hand in 
wet weather. It should also be noted that the tramway would 
be better continued at the barn end, so that the dynamometer 
might be put far enough back to drive a pulley set on the left- 
hand side of the first machine. A slight increase in the size of 
the barn is the only further suggestion we would make for the im- 
provement of a plan that left but little to be desired. 
It Avas determined that the implements in Classes IV., V., VI. 
and VII. should be tried with the straw and corn resulting from 
the threshing trials, hence it was necessary to commence work 
with the threshing machines. 
About 20 tons of wheat sheaves, the produce of 10 acres, had 
been previously stored in the shed, together with a few tons, 
respectively, of barley and oats. The quantity provided would 
have been amply sufficient if each trial had been as short as those 
at Bury St. Edmund's. After a short consultation it was resolved 
to test with larger quantities, and some delay was necessarily incur- 
red in purchasing and carting a further supply. The whole of 
the wheat used was evidently from a very indifferent crop, of a 
white variety with a weak flaggy straw and much weed in the sheaf, 
while the grain was rather cold and tough. The quality of the 
sheaf corn was well suited to test the capabilities of the machines. 
It was certainly not an easy lot to thresh and dress well, and it 
showed the weak points of each machine far better than a crop 
uniformly good could have done. A necessary consequence of 
the foulness of the sheaves was that, although every precaution 
was taken to mix them thoroughly, some difference occurred in the 
quantities of grain yielded in different cases by the same weight 
of sheaf corn. These difTerences were noted by the Judges, and 
