Time of Entry on Farms. 

 Fig. 2. 



319 



(2.) If the fomi be as in Fig. 2 : 

 The contents = ACxCDxI>E 



= the product of the height into length into the breadth, in 

 cubic yards. 



Fig. 3. 



(3.) If the dungheap bo against a wall, 

 and of form Fig. 3 : 



The contents of the part A P C D may- 

 be measured as in the case of Fig. 2, and 

 the contents of the sloping part A B P as 

 in the case of Fig. 1. 



It is easy then to find how many cubic yards a cart will hold, 

 and the calculation is finished when you know the value of a 

 cart-load according to local estimates. 



Measurement of Haystacks. 



A simple method is g:iven by Mr. Stephens, which, from stress 

 of time, as the principle is constant, I borrow : — 



" To the height from the ground to the eaves add one-half of the height of 

 the top above the eaves for the mean height ; then multiply the mean height 

 by the breadth, and their product by the length. Divide the gross product 

 by 27, and the quotient will give the number of cubic yards in the stack ; and 

 that number of yaixls multiplied by the number of stones of liay in a cubic 

 yard will give the weight of the staclv in stones imperial. It is not easy to 

 state the exact number of stones of hay in a cubic yard, as they must vary 

 according to the compressed state of the hay in the stack, the age, size, and 

 part from which the hay is taken determining the degree of compression, which 

 varies as much as from 5 to 9 stones ; but perhaps 6 stones may be near the 

 mark in a new stack, 7 in one that has stood some months, and 8 in one a 

 year or two old. [This applies to an oblong stack.] 



" The contents of a round stack with a conical top is thus measured : Take 

 the height of the round part from the ground to the eaves, and add to it one- 

 third of the perpendicular height of the conical top above the eaves for the 

 mean height of the stack. Take the mean girth, which is found by taking the 

 girth at the eaves and at the ground, and dividing their sum by 2. Square the 

 mean girth, and multiply the product by the decimal -0795, which will give 

 the area of the base of the stack. Then multiply this area by the mean height. 



