Rejwt on the Trials of Implements at Cardiff. 
435 
machines will be as antiquated as were the horse-power machines 
in 18C7. The greater part of the tlireshing; on our farms is 
now clone bj hired machines, and it is necessary for those who 
work by contract to have machines capable of suiting^ all customers. 
The truth that a somewhat wasteful application of steam power 
is much cheaper than the most economical manual labour has 
long been known theoretically, and is daily becoming more 
generally recognized in practice. 
^ The results of the first trial with 10 cwts. of sheaf-corn in this 
class are given in Table IV. The columns in this Table will be 
found to differ little fr(>m those in Tables 1., II., and III., except 
that the column for the description of finishing screen is of 
course omitted ; none being used, only one column is needed for 
the corn delivered into sacks. The points of merit are, with the 
omission of " Perfection of Finish," the same as those in the 
former trials. On comparing column 12 with the corresponding 
column 13 in Table I., we may notice that the "non-finishing" 
machines take about 2-horse power less to drive them when 
empty than the finishing machines. In Table IV. they alsa 
take considerably less power when at work. But on the other 
hand, when we compare Table V. with Table II., we find more 
horse-power required for the second run of the non-finishing 
than for the second run of the finishing machines. The apparent 
anomaly is due to atmospheric influences. Heavy rain was falling 
during the second trial in Class III., and though the sheaves had 
been safely housed they were damp and required much more- 
power to thresh them. The increase of power employed in the 
second trial, as compared with the first trial in Class III. (see 
column 21), varies from 14 per cent, in the case of Marshall^ 
Sons, and Co., up to more than 58 per cent, in Ransomes, Sims,, 
and Head's machine. 
Had the rules for judging been as stringent as they were at 
the Bury trial, every machine would have been disqualified in 
the second trial for exceeding 8-horse power, and only four would 
have escaped disqualification in the first trial. In instructions 
to Judges, the adage, " Loose will wear, tight will tear," is often 
exemplified. 
It will be unnecessary to describe the construction of most of 
the machines in this class, since they differ little from the machines 
by the same makers described in Class II., except in the omission 
3f the finishing screen, and in the omission also, in some cases, 
ijf the second fan. Column 9 (Table IV.) shows which are the 
angle-blast machines. In most of the machines in this class the 
:avings are delivered at the back and the corn at the side. 
4229. Holmes and Sons. — In the run of this machine, the upper part of tbt 
i:oncave, being adjusted after the tri.'\l witlx ten sheaves, was not made secure,. 
I 2 F 2 
