24 TRACTS ON VARIOUS SUBJECTS, &c. 



For example, experiment No. 5, yielded 50 pounds ; multiply- 

 ing this by 726, gives 36300 pounds, and dividing by 56, gives 

 648 bushels, as entered in the Table. 



I was, however, accidentally led into this mode of computation 

 — because, as I have already stated, the rows had been reduced 

 from 16^ to 15 feet. The readiest way, of determining the acre- 

 able produce of a crop of potatoes, or of corn — is first to ascertain 

 the quantity yielded from one rod (that is 16^ feet square), mea- 

 sured upon any part of the field, and then to multiply that quan- 

 tity by 160 (which is the number of square rods in an acre), the 

 product will be the computed quantity per acre. 



January I2th, 1811. 



i 



