362 Animal Husbandry 
Directions. Measure the length, width, and depth of the bin, 
Determine the number of cubic feet in the bin. Fill the half-bushel 
measure with grain from the bin and draw a straight edge over, 
leaving the grain even with the top. This is called “ struck 
measure.” Empty two of these measures into a sack and weigh, 
allowing for weight of the sack. There are 2150.42 cubic inches 
ina bushel. We now have three factors of a ratio to find the fourth. 
The cubic contents of a bushel, the weight of a bushel, and the cubic 
contents of the bin, to find the weight of grain in the bin. Divide 
the weight of grain thus obtained by the number of pounds in 
a bushel of the grain which you are measuring, to get the number 
of bushels in the bin. 
How does this compare with the rule? which is as follows: find 
the cubic contents of the bin in feet and there will be .8 as many 
bushels as cubic feet. 
17. Measurinc Hay 
Object. To determine the number of tons of hay in a stack or 
mow. 
Materials. Tape measure. 
Directions. Measure the length, width, and depth of the mow, 
and compute the number of cubic feet, and divide the product 
by 350. This will give approximately the number of tons in a 
stack or mow. The estimate will be only approximate. It will 
vary with the quality and compactness of the hay. 
18. Mzasurine SiuacGE 
Object. To determine the number of tons of silage in a silo. 
Materials. Tape measure. 
Directions. Compute the cubic contents of the silo in feet, and 
multiply the product by 40, as there are approximately 40 pounds 
to the cubic foot. To get the tons, divide by 2000. This estimate 
