604 
THE TRIALS OF GRIST MILLS AND 
DISINTEGRATORS AT PLYMOUTH. 
The second and third classes of machines entered for trial at 
Plymouth were respectively allotted to Grist Mills and Dis- 
integrators, the trials taking place in the Show-yard. 
Class 2. — Grist Mills for vse on a Farm. 
Judges. 
James Edwabds, Belmont, Flax Bourton, Bristol. 
D.vx. Pidgeon, C.E., "Walsingkam House, Piccadilly. 
Thos. Stikton, West Stratton, Micheldever, Hants. 
Prizes : Fiest, 201., Secoxd, 10/ , for the best Grist Mills for use on a 
farm to be worked by an engine not exceeding 10 brake horse-power. 
Conditions of Trial. 
The various entries in this class will be driven separately by the same 
engine, provided by the Society. 
The amount of steam used for the execution of a given amount of work 
will be the gauge of efficiency. 
The following will be the points awarded : — 
1. Cost 20 
2. Simplicity combined with strength, workmanship, and 
durability 15 
3. Power taken to drive same 15 
4. Uniformity of working and facilities for regulating . 10 
5. Uniformity of produce 15 
6. Attendance necessary 15 
7. General adaptability for grinding various kinds of 
produce 10 
100 
Twenty-six mills were entered for trial in Class 2, but the 
number actually tested was reduced to sixteen, either by volun- 
tary withdrawals during the contest, or under the operation of 
Clause 34 of the " Regulations for the Exhibition and Trial of 
Implements,"' directed against the needless multiplication of 
experiments with machines by the same maker, duplicates in 
construction, although differing in size and price. 
The list on the opposite page (Table I.) enumerates all the 
mills which took part in the competition, arranged in order of 
trial. 
Six different principles, shown in diagram by Table II., were 
exemplified in the sixteen mills tabulated above, principles 
which, as will presently appear, are all " as old as the hills," a 
fact which, while it takes nothing from the value of the com- 
petition, may, it is hoped, furnish such interest as " ancient 
history " can yield to a necessarily prosaic report. 
