SOLID MEASURE. 



TO MEASUEE DEAINS OE DITCHES. 



RJLE. Take the width at the top and bottom, add 

 these together, their sum divided by 2 will give the 

 mean width ; then multiply the width, perpendicular 

 height, and length together ; their product, divided by 

 27 (the dimensions being taken in feet and inches), will 

 give the contents in cubic yards, &c. 



Ex. How many cubic yards are there in a ditch 12 

 yards long, 7 feet wide at the top, 2 feet at the bottom, 

 and 5 feet deep ? 



120 yards equal to 360 feet ; mean width 4 feet 6 inches. 



Feet. In. 



360 



4 6 



1440 

 180 



1620 

 5 



27)8100 



300 cubic yards. Answer. 



To Jtnd the Contents from the Table : Find the 

 length in the left hand column, the depth and width in 

 one of the columns on the right of it; then under the 

 depth and width, and opposite to the length, are the con- 

 tents in cubic yards, &c. 



