MEASURING LAND. 19 



if multiplied by 40 and divided in like manner, gives the 

 perches. Thus, by making use of the last example, 

 where the length was 738 yards, and the width 576 yards 



738 

 576 



4428 

 5166 

 S690 

 A. fi. P. 



4840)425088(87 3 12 

 38720 



37888 

 33880 



4008 

 4 



16032 

 14520 



1512 

 40 



60480 

 4840 



12080 



9680 



2400 



N. B. Where the parts of a perch do not amount to 

 one-half, they are omitted in the following tables; but 

 if they exceed one-half, then they are set down as a 

 whole perch. 



