516 QUEENSLAND AGRICULTURAL JOURNAL. [1 June, 1900. 
and endowed it with £100,000. For about half-a-century the work has been. 
carried on at Rothamsted, and the Queen has recognised it by knighting its 
donor and assistants. Sir John Bennett Laws and Sir Joseph Gilbert are 
familiar names in the higher agriculture of the whole world. ; 
One of the hopeful signs of the times is that agricultural scientific 
investigation is attracting more and more attention on the part of our 
Governments, young men of promise are being drawn into its ranks, splendid 
opportunities for research are being provided in many countries, and we may 
confidently look forward to a great advancement in the next quarter of @ 
century. The !probable effect upon agricultural life of the application of 
scientific investigations and discoveries may well attract your careful attention. — 
From Appendix, Ontario Bureau of Industries. 
MEASURING STACKS. 
We have already given several formule for measuring the quantity of wheat or 
hay contained in round, square, and oblong stacks. There is yet another, which 
we take from the Farmer and Stockbreeder, and which is given in answer to & 
correspondent :— 
The volume is equal to-— 
% X area of the base x height. 
For example, we will take the stack A BC D E. Its volume consists of 
two parts :— 
1. The cylinder, A BC D, and 
2. The top or cone, D EC. 
Now the volume of the cylinder is found by doing what the querist has 
done—viz., multiplying the area of the circle A G BF by the height A.D. The 
area of the circle can be found in four ways, but the one stated is the simplest— 
viz., square the circumference and then multiply by ‘08. But then we must add 
the volume of the cone DEC. We will take an easy example—viz., a stack 
whose circumference is 30 feet, height 20 feet, and height of top 6 feet. Its 
volume will be— . 
2 
Cylinder = 380 x ‘08 x 20 = 1,440 cubic feet 
2 
Top or cone = 30 x ‘08 x 6 
——————— = 144 cubic feet 
3 
Total = 1,584 cubic feet 
This must, of course, be divided by 27 to bring it to cubic 
yards. Thus, in this instance, there will be 10 per cent. bigger 
volume than by mere measurement of the cylinder alone. I nope 
the querist will be able to convince the next hay-buyer who 
comes his way of its absolute accuracy. Of course, if the cireum- 
ference of the stack varies at different heights, the mean circum- 
ference should be taken. 
In regard to the weight of cubic yards of hay, the differences 
are great, and vary not only with the age of the stack, but also 
with the size and the position in the stack. A yard of hay at the 
top will weigh less than a yard at the bottom, and a yard in & 
stack of 500 cubie yards wil! weigh much more than in a stack of 
50 yards. Sometimes in new small stacks a cubic yard may not 
weigh more than 9 stone, whereas towards the bottom of a big old stack it may 
weigh 20 stone. Why not cut a cubic yard out and weigh it? 
ees 
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