522 
Report on the Trials of hnplements at Oxford. 
tlie spindle of the mill by a Land running over grooved pulleys, with very 
little additional power, and being held by 3 brackets only can l)e readily 
detached I'roiu the mill. oO J lbs. of flour were taken out of a bushel of wheat. 
Combined Steel Mill akd Bolter (Special Implement). 
ExKiism'R. 
Number of 
Staiul. 
Number of 
Article. 
Corn ground. 
Weight of 
Ditto. 
Time occupied. 
Total Units of 
I'owcr required 
(0 grind 1 bu.vli. 
of Corn. 
Units of Power 
to p-ind anil 
dress I lb. 
Continuous 
horse power. 
Pkice. 
Bush. 
lbs. 
£. 5. d. 
Amies audi 
BarforJ / 
3 
196 
j 1 Barley 
j 1 Wheat 
62^ 
2 47 
2 .'55 
1,115,592 
1,297,200 
19,832 
20,755 
12- 141 
13- 48) 
7 10 0 
Mf.moraxdum. — In the 1st E.\periment the original 56j lbs. barky gave 10^ lbs. me.al, 4-1^ lbs. offal, and Ij 
lbs. waste. In the 2ud Experiment the original 62i lbs. wheat gave 3U| lbs. meal, 2ai lbs. offal, and 2 lbs. 
waste. 
James Sinclair's (Coriwration-street Manchester) " L" Exiindcur " fire- 
engines have been improved considerably, and are a most valuable protection 
against fire, especially on account of their being available at once. Most 
interesting trials took jjlace in a field opi)osite to the showyard ; two large 
wooden trays. 14 feet by 6 feet, charged with coal and peti'oleum spirit, were 
well ignited, the flames were acted upon by " L'Extiucteur," and ]ierfectly 
extinguished in 22 seconds, the operator standing about 2 j'ards from the 
fire. The large-sized " Extincteur " was used, costing iil. Gs. It may be 
described as a plain cylinder of best Swedish block charcoal iron, 3 feet 
high and 11 inches diameter, and capable of containing 10 gallons, having a 
smaller tube, perforated with numerous holes, about 2 inches diameter, in. 
its centre. The cylinder is filled with water, and a given quantity of high- 
dried lime and tartaric acid introduced, a portion of bicarbonate of soda being 
placed in the inner tube, the mouth of which is screwed down tight. Chemical 
action commences immediately. Carbonic acid gas is generated, the pressure 
of which varies from 35 to 70 lbs. ; the greater the pressure, the greater the 
ejecting and extinguishing force. The gas is susi)ended in the water; the 
moment it comes in contact with the flame the gas is liberated and the flames 
are extinguished. The exhibitor guarantees that the charge will retain its force 
for a period of three years. Tlie " Extincteur " is strapped upon the operator's 
back, wlio can thus approach the fire and direct the jet, by means of a fiexible 
tube and nozzle, fitted with a tap, to any part of the flames. The value of 
such an apparatus, as a means of checking a fire at its origin before ordinary 
means can be brought into operation, is so great, and the results of the 
trials so satisfactory, that the Judges unanimously awarded a silver medal. 
The same principle is applied to a hand-power engine, to be worked by 
five men. This consists of a large tank, divided into two equal compart- 
ments holding 25 gallons each, but open at the top ; the engine should be 
kept full of water, and the chemical materials placed in packets of suitable size 
for a charge, in a box fixed on to the tanks, the high-dried lime and tartaric 
acid on one side, and the bicarbonate of soda in the other. When required for 
use, the materials are introduced into the two compartments, the fluids are 
brought into contact in the air-chamber, and the gas generated with sufficient 
rapitlity ; as the water is replenished additional ingredients are added, and 
thus a most piowerful means of extinguishing a fire is provided. The fluid is 
discharged in a powerful stream, and can be thrown 50 feet high. 'Ihe tanks 
are made of galvanised iron, and will keep charged for any length of time ; so 
