THE CHEMISTRY OF THE SOIL. 117 



LIST OF FERTILISERS IN NEW SOUTH WALES. 



The accompanying list of manures obtainable in New South Wales, 

 together with their composition, as guaranteed by the vendors, is published 

 in the interests of the farmers, and it is hoped that it may serve as a guide 

 to those requiring any particular class of manure. It is complete to 

 April, 1922. 



It must be clearly understood that the figures given are not those obtained 

 by analysis of the sample by the Department. They represent the gua/rantees 

 given by the vendors in accordance with the provisions of the Fertilisers 

 Act. Where possible, samples have been taken from bulk by one of the 

 officers of the Department, and purchasers may be confident that the manures 

 included in the list are up to the guarantee. 



On account of the unsettled conditions obtaining at present, the market 

 value of these manures may alter. An attempt has, however, been made to 

 assign a " unit value " to the fertilising ingredients, viz., nitrogen, phosphoric 

 acid, and potash. 



A word is necessary in explanation of the column giving the " manurial 

 value" of the manures. These figures are calculated from the composition of 

 the manures and the market prices then current, a definite unit-value being 

 assigned to each of the fertilising ingredients. The units on which the values 

 given are computed, are as follow : — 



Unit-Values of fertilising ingredients in different manures for 1922. 



Nitrogen in nitrate 



,, in ammonium salts ... 



,, in blood, bones, offal, &c. — fine ... 



Phosphoric acid in bones, offal, &c. — fine ... 

 Phosphoric acid (water soluble) in superphosphates 

 Potash in muriate of potash ... 



,, ,, sulphate of potash 



Price per lb. of fertilising ingredients in different manures for 1922. 



Pence per lb. 



Nitrogen in nitrate ... ... ... ... ... .. ... ... 15'6 



,, in ammonium salts ... ... ... ... ... ... ... 10"2 



,, in blood, bones, offal, &c. — fine ... ... ... ... ... 123 



Phosphoric acid in bones, offal, &c. — fine ... ... ... ... ... 3'5 



Phosphoric acid (water soluble) in superphosphates ... ... ... 4'1 



Potash in muriate of potash ... ... ... ... ... ... 6"8 



,, ,, sulphate of potash... ... ... ... ... ... ... 4'6* 



* The above figures (especially for potash salts) are liable to fluctuation. Those quoted were correct at 

 the end of August, 1922. 



