24 



Journal of Agriculture, Yictoria. [lo Jan., 1912. 



2. .SuPliRPUOSPHATE — 



Incolct certi/fcdte or fag — 



Water soluble phosphoric acid 

 Citrate soluble phosphoric aci<l 

 Insoluble phosphoric acid ... 



] 7 per cent. 

 1 

 2 



20 



Total phosphoric acid 



Calculation — £ s. d. 



Phosphoric acid (water soluble)— 17 X 4s. 9d. = ... 4 9 



,, ,, (citrate soluble) — 1 X 4s. - ...0 4 



,, ,, (insoluble) -2 X 2s. = ... 4 



Calculated value per ton ... ... ... 4 S 9 



3. BONEUUST — 



Incoict certijifafe or tag — 



Nitrogen 

 Phosphoric acid 

 Mechanical condition — 



Fine 



Coarse 



Calculation — . 

 Nitrogen, fine 



3-50 X 40 



100 

 3;50 X^O 



100 

 19 50x40 



3.50 per cent. 

 ... 19.50 



... 40 per cent. 

 ... 60 



£ s. ,1. 

 1-40 X 12s. 9d. = 17 10 



= 210 X 12s. =15 2 



= 7vS0 X 4s. 6d. = 1 15 2 



Nitrogen, coarse 

 Phosphoric acid, fine 



19 50x60 

 Phosphoricacid.coarse -jqT) - = 11*70 X 4s. =269 



Total value per ton 



6 4 II 



4. Mixed Manuks— 



Invoice certificate or tag~^ 



Nitrogen as sulphate of ammonia 

 Phosphoric acid — 

 Water soluble 

 Citrate soluble 

 Citrate insoluble 

 Potash as muriate (chloride) 



Cah Illation — 



1-60 X 14s. 9d. ^■ 

 11-50 X 4s. 9d. = 

 •65 X 4s. = 

 ^ l2o X 2s. = 



1-50 X 43. 6d. = 



Calculated value per ton 



4 10 



General Remarks. 



All substances containing nitrogen, phosphoric acid, or potash, manu- 

 factured or prepared for the purpose of fertilizing the .soil, come under the 

 i;peration of the Artificial Manures Acts. 



Nitroo-en is the most expensive of the three essential fertilizing elements. 

 It exists in three forms — organic, ammonia, and nitrate. Organic 



