240 SCIENTIFIC AGRICULTURE. 



phy, that almost every practical mechanical operation can be 

 reduced to scientific rules, and the result calculated with 

 mathematical certainty before the work is commenced. We 

 see also how much more easily and economically many opera- 

 tions might be performed, and how much disappointment and 

 money might be saved by a knowledge of this branch of sci- 

 ence, to the visionary inventors of patent rights, the only fault 

 of which is, that they refuse obstinately to perform any part 

 of the work designed for them, and the greatest misfortune of 

 whose inventors is their ignorance. A knowledge of mechani- 

 cal philosophy is indispensible to the accomplished mechanic or 

 agriculturist 



