RULES FOR MEASUREMENTS. 711 



A cask of lime is 240 pounds. Lime in slacking absorbs 2] times its 

 volume, and 2\ times its weight, in water. 



To Measure Corn on the Cobs, in Cribs. Corn is generally put up in cribs 

 made of rails ; but the rule will apply to a crib of any size or kind, whether 

 equilateral or flared at the sides. 



When the crib is equilateral : 



Rule. Multiply the length in feet by the breadth in feet, and that again 

 by the height in feet ; which last product multiply by 0.63 (the fractional part 

 of a heaped bushel in a cubic foot), and the result will be the heaped bushels 

 of ears. For the number of bushels of shelled corn, multiply by 0.42 (two- 

 thirds of 0.63), instead of 0.63. 



In measuring the height, of course the height of the corn is intended. 

 And there will be found to be a difference in measuring corn in this mode, 

 between fall and spring, because it shrinks very much in the winter and spring, 

 and settles down. 



When the crib is flared at the sides : 



Rule. Multiply half the sum of the top and bottom widths in feet by the 

 perpendicular height in feet, and that again by the length in feet, which last 

 product multiply by 0.63 for heaped bushels of ears, and by 0.42 for the num- 

 ber of bushels of shelled corn. 



Note. The above rule assumes that 3 heaping half-bushels of ears make 

 i struck half-bushel of shelled corn. This proportion has been adopted upon 

 the authority of the major part of our best agricultural journals. 



Measurement of Hay. The only correct way of measuring hay is to 

 weigh it. This, on account of its bulk and character, is very difficult, unless 

 it is baled or otherwise compacted. This difficulty has led formers to esti- 

 mate the weight by the bulk or cubic contents, a mode which is only 

 approximately correct. Some kinds of hay are light, while others are heavy, 

 their equal bulks varying in weight. But for all ordinary farming purposes of 

 estimating the amount of hay in meadows, mows, and stacks, the following 

 rules will be found sufficient : 



As nearly as can be ascertained, 25 cubic yards of average meadow hay, in 

 windrows, make a ton. 



When loaded on wagons, or stored in barns, 20 cubic yards make a ton. 



When settled in mows or stacks, 15 cubic yards make a ton. 



Note. These estimates are for medium-sized mows or stacks ; if the hay 

 is piled to a great height, as it often is where horse hay-forks are used, the 

 mow will be much heavier per cubic yard. 



When hay is baled, or closely packed for shipping, 10 cubic yards will weigh 

 a ton. 



To find the number of tons in long, square stacks : 



Rule. Multiply the length in yards by the width in yards, and that by 

 half the altitude in yards, and divide the product by 15. 



To find the number of tens in circular stacks : 



Rule. Multiply the square of the circumference in yards by 4 times the 

 altitude in yards, and divide by 100 ; the quotient will be the number of cubic 

 yards in the stack; then divide by 15, for the number of tons. 



