a Feb., 1907.] Ariifiaal Manures Acts. 



Unit Values of Manures in the Melbourne Market for the 1907 



Season. 



Unit Value. 



s. d. 



I per cent, of nitrogen in the torna of nitrate of soda ... 15 6 



,, ,,. ,, nitrate of potash ... 15 6 



,, „ ,, sulphate of ammonia 14 4 



>, ,, ,, blood manurt- ... 11 o 



}, ,, ,, fine bonedust ... n o 



y> ,, ,, coarse bonedust ... 9 6 



If an in\oice does not state whether the nitrogen in the manure is in 

 the form of nitrate, or sulphate, or blood, or bones, it is to be assumed 

 to have the value of bone nitrogen. 



Unit Vakie. 



s. d. 

 I per cent, of water soluble phosphoric acid ... ... 46 



I per cent, of citric soluble phosphoric acid (Thomas 

 phosphates, nitro-superphosphates, ordinarv super- 

 phosphates, guanos) ... ... ... 40 



I per cent, of insoluble phosphoric acid (Thomas phos- 

 phates, nitro-superphosphates, guanos) ... 3 o 

 I per cent, of insoluble phosphoric acid, in ordinary super- 

 phosphates ..■. ... ... ... 10 



In a bone-dust — 

 I per cent, of ])hosphoric acid in fine bone ... ... 40 



,, ,, ,, ,, coarse bone ... 3 o 



,, ,, potash ... ... ... ... ^ (^ 



The average commercial \alue per ton of a manure sold in Victoria is 

 obtained by multiplying the percentages stated of the fertilizing substances 

 by the corresponding unit values fixed therefor, and adding the separate 

 values together. Examples: — 



1. Sulphate of ammonia. Invoice certificate. 18 per cent. 



nitrogen — 

 Calculation: 18 x 14s. 4d. ... ... ;£*2 j8 o 



Calculated value per ton ... ... 12 18 o 



2. Superphosphate — 



In\'oice certificate 20 per cent, phosphoric acid (watt^r soluble;. 



,, ., 2\ ,, ,, ., (citrate soluble). 



,, .. \\ ,, ,, ,, (insoluble"). 



Calcula:ion — 



Phosphoric acid (water soluble), 20 x 4s. 6d. ^4 10 o 



., ,, (citrate soluble), 2j x 4s. o 10 o 



,, ,, (insoluble), i|xis. ... 016 



Calculated value per ton ... ^5 r 6 



Bonedust — 

 Invoice certificate, 5 per cent, nitrogen, 20 per cent, phosphoric 



acid. 

 Mechanical condition : 30 per cent fine, 70 per cent, coarse. 



