(504 Report of t/ic Trials of Ploughs, Harrows, Sfc, at Hull. 
A ictoria potatoes, the tops of which were not ripe and very 
rank ; but unfortunately, on being raised, the tubers were found 
to be extensively diseased. In Class 32, the Prize of lOZ. was 
awarded to Messrs. Corhett. and Peele, for their plough. No. 2858, 
having a single mouldboard, and fitted with their " Little 
Wonder " revolving fork (see description and figure of article, 
No. 2849, p. 578), the price complete being 8/. A " High Com- 
mendation " was also awarded to 3Iessrs. Corhett and Peele for 
their double-mouldljoard plough (No. 2857), fitted with two 
revolving forks, price 8/. complete. The Judges attached the 
" Little Wonder " revolving fork to an ordinary plough for 
raising potatoes, and found it a very useful addition, making a 
saving in manual labour, owing to its breaking up the ridge 
ploughed out, which therefore would not require to be scratched 
down by hand. It was also considered a great advantage to 
have the tubers placed, as by the single-mouldboard plough, all 
in one heap, being then more conveniently placed for gathering 
than when thrown out on both sides by the double-mouldboards. 
The single-mouldboard plough was further regarded as better 
adapted for ploughing all the roots up, in the event of it not 
being convenient to gather them immediately after ploughing. 
No award Avas made in Class 33, for the best machine or digger 
for raising potatoes ; but the Judges think that one of the 
implements brought to competition is capable of improvement, 
though at present only useful on light soils when very clean. 
Before concluding the Report, I venture to draw attention to 
the highly instructive facts deducible from the dynamometric 
trials, particulars of which have been furnished by Messrs. 
Easton and Anderson, the Consulting Engineers. Reference to 
the report of trials of steam-cultivating machinery at Wolver- 
hampton, in 1871, affords a comparison of the relative power 
required to execute a certain amount of work by implements 
driven by steam-power, by double and single-furrow horse- 
ploughs and other implements, and thus gives a relative idea of 
the economy of the different implements : — 
At Barnhurst. 
At Stafford. 
The averaj^e ft.-lbs. of work indicated per lb. of I 
17-7 
21-7 
The average ft.-lbs. per lb. of earth cultivated 
15-2 
20-3 
It must be borne in mind, in making a comparison, that the 
results are affected by the nature of the soil, and therefore 
the greater amount of power expended at Stafford where the land 
