AGRICULTURAL EXGIXEERING. 



143 



RISE OF THE SLOPE FOR 100 FEET. (Waring.) 



Table I. gives the rise of the slope for loo feet of the horizontal 

 measurement. 

 Table IL, the rise of the slope for loo feet of its own length. 



ICjtrawpie.—U the horizontal measurement is 100 feet, and the slope is at 

 an angle of 10°, the rise will be 17.633 feet. 

 If the sloping line (at an angle of 15°) is 100 feet, it rises 25.882 feet. 



QUANTITY OF EARTH RE3IOVED PER ROD OF 

 DRAINS OF VARIOUS DIMENSIONS. (Scott.) 



*' If a 4-ft. drain be cut 14 in. wide at top and 4 in. at bot- 

 tom, the mean width will be g in., and the quantity of earth 

 excavated in cutting- each rod will b? 1.83 cubic yards ; if 



