JVear and Tear of Agricultural Steam-Engines. 335 
Expenses of a dafs work (f a i-horse-jMwer machine estimated as before. 
Crop of 1860 :— 
Reaped wheat, 30 quarters, at Is. lid. per quarter. 
Mown ditto 20 „ 2s. lOU. 
• Barley 23 „ 2s. 6(/. 
Oats 30 „ Is. lid. „ 
Crop of 1861 :— 
Reaped wheat, 36 quarters,* at Is. 7c?. per quarter. 
Mown ditto 30 „ Is. Ud. „ 
Barley 28 „ 2s. 0^1 
Oats 35 „ Is. 
Coal used, 5 cwt. a-day. 
Details of 4-Horse Power Machinery, as ia the former case. 
s, d. 
1 driver 3 6 
1 feeder 3 6 
1 to supply ditto 2 0 
2 on stack" 4 0 
1 on straw-stack 2 0 
1 to pitch ditto 2 0 
1 to move corn and load it 2 0 
1 horse ditto 2 6 
1 to drive 0 8 
1 to rake chaff and cavings, and help load 10 
1 to drive ditto to barn and fetch coal and water .. 14 
1 horse for ditto .. 2 6 £ s. d. 
17 0 
Depreciation of engine 0 11 7 
„ machine 0 13 5 
Oil and coal, 5 cwt 05 6 
£2 17 6 
To these average results it may be interesting to add the parti- 
culars of two trials made by the wiiter on January 21 and 
22, 1862, with a single-blast machine, made in 1854, driven 
by an 8-horse-power engine, made in 1856, by Messrs. Clayton 
and Shuttleworth. On the second day we threshed of mown 
wheat 10 qrs. ; of straw, 61 cwt. ; of cavings, 4| cwt. ; of chaff, 
7 cwt. per hour. The crop was not heavy, only about 4 qrs. per 
acre. This gives 25 acres threshed in 10 hours, yielding 100 
qrs. of wheat, 30j tons of straw, 5 tons 7 cwt. cavings and chaff. 
This was a larger proportion of cavings and chaff than that 
obtained at other ti'ials. 
* Forty-four quarters was the maximum in one day. To each of these estimates 
we must add 4jrf. per quarter for incidental expenses (see p. 336), and in the case 
of single-blast machines 2M. per quarter for dressing twice and measuring. In 
practice it is usual to dress once and re-measure, even after the so-called finishing- 
machine, partly to get a uniform sample, and partly to improve the dressing and 
obtain accurate measure. 
