Agricultural Steam-engines at Neibcasth. 
687 
age, exhibited great skill and coolness in bis work. During 
the trial, the governor "hunted" a good deal, in spite of the 
lact that a rough equivalent for a dashpot, in the shape of a 
spring pin pressing upon a double inclined slot in the governor 
spindle was employed. The result upon consumption was, 
however, apparently trifling. Apart from the " hunting " of the 
governor, the engine worked smoothly and regularly, without 
any heating throughout the trial. 
It speaks well for the workmanship of Mr. Foden's engine 
that, in spite of the very high steam pressure employed, no sign 
of a leak was anywhere visible ; whether from engine or boiler, 
not a breath of steam issuing, even from a stuffing box. It is 
further worthy of remark that Mr. Foden has not adopted the 
sight-feed lubricator, but trusts to the ordinary forms of lubri- 
cators, notwithstanding the pressure and heat of his steam. 
This engine ran for 4 hours and 21 minutes actual, and 
4 hours 27^ minutes mechanical time, with a coal supply of 
1 48 J lbs,, equal to a consumption of 1 • 94 lbs. of coal per horse- 
jiower per hour. 
The weight of the engine was ascertained to be 11 "20 tons 
when empty. This is more than a ton over the weight which, 
had weight limits formed one of the conditions of trial, the 
Society would have imposed, and it may not be out of place to 
remark that the weight of the engine, conspicuously painted on 
its fore carriage, was considerably below that indicated by the 
Aveighbridge. 
Simple Engine, by Messrs. J. and H. McLaren {No. 3108). — 
This was the second engine tested on Saturday the 9th, and, 
a close run between it and the Davej-Paxman Simple Engine 
being expected, there was, again, considerable interest excited 
by the trial. 
The engine has a boiL^r of the locomotive type, with a parallel barrel. 
The cylinder is placed over the fire-box, and a little out of centre. The 
cylinder and covers are completely jacketed and lagged, the jacket draining 
into the boiler. The piston-rod and slide-spindles are of steel, while the 
slipper consists of a steel casting. The slipper-guides are, each, of two flat 
■wrought-iron bars, bolted to the cylinder and a bracket, at either end, respec- 
tively. The crank is " bent," and of steel, shouldered close up to the crank 
bearings, which are carried by wrought-iron horn-plates riveted to the boiler 
by angle irons. A strong stay connects each crank-shaft bearing with the 
cylinder on one side, and the steam-jacket on the other. The crank brasses 
are divided vertically aud adjusted by set-screws. 
The valve gear consists of a main and cut-off slide, the latter controlled by 
a Hartnell-Turner governor, which, b}' determining the moment of suppres- 
sion, regulates the speed of the engine. The Hartnell-Turner governor, as 
already mentioned, has been fully described in a past number of the ' Journal.' 
The pump stacds vertically below the crank-shaft and draws constantly 
from the tub, having a bye-pass for the return of unused water in the usual 
way. It delivers into a heater, which consists of a wrought-iron pipe, about 
