fFear and Tear of Afjricultural Steam- Enrjiiics. 327 
Repairs of Fixed Enr/ines. 
The following were the repairs done to an overhead 10-horsc- 
povver fixed steam-engine, fitted Avith extra large boiler for 
burning wood, in 1S53, belonging to the Right Hon. the Earl of 
Stradbroke ; price, not including fixing, 350/. : — 
1854. x". s. (/. £. s. d. 
Jan. 30th. Repairs 0 15 0 
Jul}' 15tb. Adjusting engine-slides 0 13 6 
,, Water-gange glass and piimniets .. 0 4 9 
August. Excentric band repaired 0 10 G 
„ Furnace-bars 14 0 
. 3 7 9 
1855. 
March. I'epairs 5 3 G 
December. Bars and new back 2 17 0 
„ Screws, &c 0 5 6 
9 6 0 
1856.— Xothin-. 
1857. 
March. A cast back to furnace and bars .. .. 1 10 6 
April. Piston taken out and repaired .. .. 3 15 0 
. 5 5 6 
18.58. Bars 1 10 9 
1859. — Nothing. 
1860. — Same. 
1861. 
July. Kex'airs to piston, &c 4 70 
2.1. 19s. ~iL per annum for eight years. ■ £23 17 0 
This is the only detailed estimate we possess, and the gross 
sum happens to be heavier than in any other return. On the 
whole we believe that 3/. per annum for the first ten years will 
cover the cost of repairs of an eight or ten horse fixed engine, 
well managed, and used as often as it is likely to be required on 
any large farm. At the end of that period the cylinder will pro- 
bably require re-boring, and a general repair of the engine and 
boiler will be needed, at a cost of about 40/. 
In order to estimate the proper charge for repairs and depre- 
ciation we must know how long the engine will last. Supposing 
the process of repair to be repeated, it is diflRcult to assign a limit 
to the duration of a well-made engine, simple in all its parts as a 
non-condensing engine is now made. We shall, however, for pur- 
poses of calculation, suppose that at thirty years old an eight-horse 
engine is worth 50/. with its fixing, and that besides the outlay 
of 3/. a year for lesser repairs it has in its tenth and twentieth 
years received a thorough repair, as before referred to, at a total 
cost of 80/. The annual charge will thus be raised on the average 
of thirty years to 5/. 13*. 
