576 
Trials of Traction- Engines at Wolverhampton. 
made upon wheels formed as those of the " Sutherland " were ; 
and thus, when the " Sutherland " got upon the slippery, 
treacherous surface at Barnhurst it came to grief in the way 
that has been stated. Whether considered in point of economj 
of fuel as a driver of machinery, or of efficiency for traction upon 
a farm, Mr. Aveling's 10-horse-power engine, No. 7001, no doubt 
was far ahead of any of its competitors. We therefore awarded 
to Aveling's 10-horse-power engine, No. 7001, the prize of 50/. 
The only point on which it was surpassed was that of its ad- 
hesive powers upon a high road ; here, no doubt, it was not 
equal to the Thomson system, and we felt that the merits of 
the indiarubber tyres were such as to justify our awarding a 
silver medal to that invention, as we did also to the invention of 
Mr. William Bridges Adams for his application of indiarubber 
between the internal and external tyres of the wheels. We 
much regret that the constant use the Royal Agricultural Society 
of England made of this latter engine at Stafford prevented our 
trying its tractive force upon the road. We believe that it would 
have turned out to be very high, judging from the reports made 
to us from Stafford. 
These medals were awarded, with the approbation of the 
Stewards, as provided for by the rules of the Society. 
iT;Aveli'ng and Porter's 6-horse-power, No. 7002, we highly 
commended, and Burrell's 8-horse-power locomotive, No. 3660, 
which appeared to us to be a very well-devised and well-made- 
machine, we commended. 
We believe we have now reported to the best of our ability 
upon the construction of the different engines which competed 
in Class XVII., upon the trials to which those engines were sub- 
jected, and upon the way in which they endured those trials; and 
we have stated the results so far as regards the prize-list. 
We cannot conclude our Report without expressing our great 
pleasure at witnessing the thorough cordiality existing among all 
the exhibitors. The rivalry and competition were of the keenest ; 
but, keen as they were, they never for one moment caused the 
least departure from the most perfect good humour, nor did they 
in any way give rise to selfishness. Each exhibitor was most 
ready to do all in his power to help a brother exhibitor and rival 
at a pinch, as we saw upon more than one occasion. Such con- 
duct as this on the part of exhibitors most largely contributes to 
the comfort of all concerned, and especially to that of the Judges, 
and enables them to carry out their duties with untroubled 
minds. 
We have to thank all the exhibitors for the ready way in- 
which they carried out every direction given by us, and for the 
