402 
On Ihe Feedinff of Slock icitli jircj ared Fuvd. 
friends came from the establishment of Messrs. Barker, Culler, 
and Eastwood, Waterloo Iron- Works, Bradford, Yorkshire. Their 
workmanship has given great satisfaction. 
A waggon-shaped wroiight-iron closed steam boiler, about 3 
feet 6 inches long, 2 feet 6 inches wide, and of proportionate 
dimensions, is set in brick-work over a furnace, with grate and 
door attached, with a circulating flue, built with fire-bricks. 
The boiler is supplied with water from a cistern, containing about 
250 gallons. I'he same cistern also supplies water with which 
the linseed is mixed for boiling. By means of fuel, the steam is 
raised to a pressure of about four pounds on the square inch ; that 
being the pressvrre best suited for oiir purpose. But when that 
pressure exists, the boiler will not sirpply itself with water (which 
it ought to do), unless the water in the cistern be elevated twelve 
feet above the water in the boiler; and in most situations for 
I'aising water into a cistern so elevated, a force-pump is required, 
and is found to be the most etl'ective and cheapest instrument that 
can be employed for that purpose. The boiler should have a 
safety-valve, a steam-gauge, and a water-gauge. A pijje of 
three-quarters of an inch bore conducts the steam from the top 
of the boiler to the vessel containing tlie linseed, which we come 
to next. 
At such a distance from the boiler as is most convenient (per- 
haps two or three yai'ds from it) is fixed a circular cast-iron pan, 
about 30 inches wide, and 26 inches deep, having a rim or flange 
round its outer edge 3 inches wide; inside this is placed a smaller 
pan, 28 inches wide and about 24 inches deep, also having a rim 
or flange round its outer edge, but so much wider than the flange 
of the other pan, that when the smaller pan is placed inside tlie 
larger one, the outer edges of the two flanges are commensurate. 
The two flanges are jointed with bolts and cement, so as to be 
steam-tight. The two vessels thus fitted together, may not in- 
ajilly be compared to a small hat placed inside a large one. 
'I'his being done, there is between the outer surface of the lesser 
and the inner surface of the greater pan a small space for the 
steam to be conducted fronr the boiler by the al'oresaid pipe; in 
Avhich is placed a stopcock for increasing, diminishing, or entirely 
cutting off" the supply of steam. The water generated by con- 
densation in the interval between the two pans is drawn ofl' by a 
small tap in the bottom of the outer pan. The smaller pan is 
made to contain about 40 gallons, in which the linseed is pre- 
pared. Such a pan filled with water will boil, in about 30 mi- 
nutes, enough linseed * for a single meal for 24 head of cattle. 
* The linseed slioiiM be cruslicd before boiling, but not reduced to meal. 
Peas, beans, iuid Indian corn should be ground into meal, otiicrwise they 
pass through Ihe animal whole and undigested. Other grain should be 
either crushed or ground. 
