Trials of Implements at Carlisle. G79 
this as it may, the machine is exceedingly well constructed ; the 
rollers are made of special metal, and carried by an anti-friction 
Fig. 15.— Messrs. Bueliliolz and Co.'s Corn-grinding Boller-milJ. 
ring which allows great pressure to be put on them without 
injuring the bearings. 
No. 2932, James Harkness, of Gretna, Dumfries, the veritable 
Gretna Green smith (who during the storms amused us all in the 
trial-grounds with many curious stories of that celebrated place), 
exhibited some Drill Ploughs, one of which was taken out into 
1 
