412 Report on the Trials (f Imj)leinents at Cardiff. 
tion of the straw, chaff, &c., the result in figures. Where 
several observations ^yere taken, he subsequently gave in the 
average result of his different scores, the points of merit printed 
in Table I. being the average obtained by comparing the four 
different log-books. The machine was again run empty until 
the regulation speed of 1884 feet was obtained. Each exhi- 
bitor had six men to attend the machine, three of these cut the 
bands and handed the sheaves to the feeder, one attended to 
the corn, and one to the chaff and cavings. At a given signal, the 
first of the 20 cwts. of sheaves was handed from the stage on which 
it had been stored to the exhibitor's men as fast as they required 
them. The time of commencing was noted, as soon as the last 
of the loose corn was swept into the drum the time was again 
noted ; the difference of these two observations is entered in 
column 17 as "Time occupied in Feeding." The straw as it 
came from the machine was taken to another part of the shed, as 
already stated, and rethreshed, the cavings were also rethreshed 
at the end of the run, the grain thus extracted was subsequently 
passed through a dressing machine, and the results are recorded 
in columns 26, 27, and 28, and determined the points of merit 
in column 32. Frequent observations were made of the straw 
as it came from the shakers in order to ascertain how much it 
was broken, and whether corn was left in the ear, from imperfect 
threshing, or simply mixed up loose in the straw from im- 
perfect shaking ; these observations determined the points in 
columns 33 and 38. 
The quantity of the cavings was measured, and is recorded in 
column 29, and determined the points in column 34. 
The points in columns 35, 36, and 37, were determined by 
frequent examinations of handfuls of the chaff taken at short 
intervals, and spread over the surface of a good sized table 
placed under the loft and between the machines. Small samples 
of the corn delivered were taken at intervals, the whole bulk 
delivered at each spout was weighed, and the quantities entered 
in columns 23 to 25 ; a subsequent examination of the corn 
determined the points recorded in columns 39 and 41. Alter 
the last sheaf had been put into the drum the machine continued 
to run till it ceased to deliver any of the products ; a thorough 
examination was then made of the riddles, screen, hummeller, 
&c. ; if any lodgment was found in these it reduced the points 
as given in column 40 ; this cleanness of delivery is a point of 
special importance in threshing out seed corn. The dynamo- 
meter was personally superintended throughout the trials by one of 
our consulting engineers, Mr. VV. Anderson, who also examined 
the mechanical construction of the machines, and recorded his 
remarks in column 43. The speed of the driving-belt being 
