THE CHEMISTRY OF THE SOIL 



L19 



If the purchaser has any reason to suspect the genuineness of the guarantee, 

 all he has to do is to notify the vendor of his intention to take samples for 

 analysis, in sufficient time to enable the vendor or some person appointed 1>\ 

 him to be present. The sum pies must be taken before the consignment is 

 finally in the purchaser's possession ; for example, if the fertiliser is sent by 

 rail, the sample should be taken at the railway station or siding. Three 

 samples must be taken, one being given to the vendor or his representative, 

 the second kept by the purchaser and submitted to an analyst, and the third 

 forwarded to the Department of Agriculture for future reference, in case of 

 divergence in the analyses of the other two. All three samples must be 

 sealed up. 



In the case of bonedust, blood and bone manures, &c., the valuation has 

 been made on the assumption that the product is in a fine state of division, 

 and is based on the amounts of fertilising ingredients only ; but it must be 

 borne in mind that finely-ground bonedust acts more rapidly than coarse, 

 and that unground fragments of bone only become available as fertiliser 

 very slowly. 



A number of waste products which may in many cases be economically 

 utilised have been analysed in the laboratory at various times. The results 

 of those analyses appear in Table IV on pages 122 to 124. 



When purchasing a manure, always insist on a guarantee of its composition 

 as determined by the analysis. 



Never add lime to a manure containing sulphate of ammonia or blood and 

 bone manures, as in these cases loss of nitrogen results ; and when lime has been 

 applied to the land, do not use such manures until about three weeks afterwards. 



Table I. — Simple Fertilisers. 



Guaranteed Composition. 



Manure. 



Where obtainable. 



O # o3 



"5 2 



3 S 



Manurial 

 Value. 



oulphate of ammonia' Australian Fertilisers Proprietary, Ltd 

 (successors to Geo. Shirley, Ltd., 

 7 O'Connell-street) 



Nitrate of soda 



Muriate of potash 



Sulphate ,, ,, ■ • ,. •> 



„ ammonia Australian Gaslight Co. , Hay market 



,, ' Farmers' Fertilisers Corporation, 3 

 Hunter-st 



Gypsum 



Sulphate of potash . . 

 Agricultural lime. 



(Burnt lime, air! 



slaked). 

 Ground rock phos- ,, ,, ,, 



phate. 

 Sulphate of ammonia 1 Paton, Burns, & Co., 75 York-st. 

 Muriate of potash . .1 „ ,, ,, 



Nitrate of soda . J ,, >, ,, 



per 

 cent. 



96 

 Crvst. 

 CaSO* 



per 



cent. 



52-7 



52 



per 



cent. 



£ a. d. 

 *20 4 7 



22 13 8 



36 19 6 



t31 12 8 



20 4 7 



20 4 7 



31-95 



20 4 7 



36 1!) 6 

 22 16 7 



* May be purchased at 17s. 8d. per unit or £18 per ton at producers' works. 



t These figures (especially for potash salts) are liable to fluctuation. Those quoted were correct at the 

 end of August, 1922. 



