Report of the Trials of Ploughs, Harroios, S^-c, at Hull. 525 
Trial with Dynamometer. 
Number of field. 
Weight of earth per square inch per yard run 
Specified width and deplh 
Time occupied. 
Distance rnn. 
3 
Depths. 
Inde.\ before and 
after. 
Nctt Index 
registered. 
Ft.-lbs. of work 
registered per yd. 
Weight of earth 
moved per yard. 
Ft -lb.s. work per 
lb. earth moved. 
Draught. 
Mean areas. 
Points of Merit. 
Perfection 
being 
Weight 
Price 
Mechanical qualities and strength. (Engineers' opinion) 
Simplicity. (Farmer Judges' opinion) 
Economy in power and draught 
Time in trial with horses 
Perfection of worlc with horsi-s 
Flatness of sole of furrow 
Cut on laud side 
Neatness of laying slices and burying of vegetation 
EflBciency of skim coulter 
ToUls 
