AMERICAN INSTITUTE. 173 



above cut) run with the least noise, will last longer, and are 

 recommended in all cases where they can be conveniently used. 



The twenty inch is a superior farm and plantation mill, grind- 

 ing corn and all kinds of grain in the best manner, by horse power. 

 The demand for a mill which can be made to grind wlieat, corn, 

 &c., by horse power, f^r farm or plantation use, has not hereto- 

 fore been supplied; and public attention is invited to tliis small 

 mill. 



The thirty inch mills are now used in place of common stone, 

 in maijy of the best mills in the country, witli decided advantage, 

 both in tlie power required and in the quality and quantity of the 

 meal. 



If at any time the mill does not grind as fine as you require 

 without the stones hitting each other, then let the faces be ground 

 together for a short time liglitly, dress off the glazed surface, being 

 careful not to touclithe faces where they are not smooth by grind- 

 ing. Repeat this process a few times, if necessary, and you have 

 a perfectly faced mill. 



Never use a straight-edge or red stick on my mills, or you will 

 certainly get the stones outof facf, and there is but one exception 

 to this rule, viz : When either of the stones become very much 

 rounding, then true tiiem again by a straight-edge, and afterwards 

 bring them to a good iace by grinding and picking, as described 

 before. 



My mills will not shake if run on an inch floor, when the run- 

 ner is well balanced; and if they ever do shake, even at any speed, 

 stop the mill at once, and balance the runner, by taking two metal 

 straight-edges and placing them level upon solid benches, high 

 enough from the floor so tliat the stone will turn. Then let the 

 stone be placed upon the level straight-edges, so as to turn freely 

 upon the bearings of the spindle, and balance the stone by adding 

 weight to the light side, so that it will remain still when turned 

 to any position. [»/3 gold medal having been before av^arded^ .Dip. 



