1008 Agricultural Journal of Victoria. 



As we know the unit values of the two loiins (tlit vakie of 1 per cent in a ton), it is 

 easy to calculate the full value of a ton of each of the manures : — 



\'akie of p . , , 



Manure. ^'"^^ ^^'''''*- 



Thus the first . . 18 x 5s. 3d. - £4 14 (i 



1 X 4s. 6c1. — 4 6 



.. £5 



£4 lii 



£4 3 3 ., £4 15 



In the first two cases it will be seen that the price asked and the valuation show no 

 very marked difference. In the third case, however, the price is far too high for the 

 fertilizing ingredients contained in the manure, and the use of the unit \alues enables 

 the farmer to find this out. 



Fred. Jno. Howell, 



Chemist for Agriculture, &c. 



