On Superj)]iosp]iate of Lime. 223 



Analyses of Superphosphate of Lime (Superior Samples). 





No. 1. 



No. 2. 



No. 3. 



No. 4. 



Organic matter and salts of am- 



Bi-phosphate of lime (soluble) . 

 Neutral phosphate (insoluble) . 



Hydrated sulphate of lime (gyp- 

 Alkaline sulphates and muriates 

 and substances inidetermined 



Nitrogen in the organic matter 

 and ammoniacal salts 



14-71 



10-18 

 18-50 



O OO 



9-98 

 36-63 

 3-65 



9-6G 



14- 50 



15- 34 



• 79 



lO i 4i 



2-83 

 36-12 

 5-83 



3-75 



15-45 

 1 - 1 '2 

 9-70 



40-04 



8-59 



4-05 

 9-92 



90 • 4 ' 



1-97 

 31-29 

 6-34 



100-00 



100-00 



100-00 



100-00 



Undeter- 

 mined. 



2-33 



2-03 



3-24 



Neutral phosphate, to which the 

 bi-phosphate is equal . 



27-20 



22-62 



22-78 



14-62 



At the foot of the tables I have placed a line indicating the 

 amount o{ precipitated j)hosphate which will be formed by each 

 sample when mixed with the soil. The numbers also indicate 

 how much of the neutral phosphate has been acted on and ren- 

 dered soluble. In comparison with these we will now take the 

 analyses of some bad samples, of which, I regret to say, the 

 number given is, relatively to those which have passed through 

 my hands, very small. 



Analyses of Superphosphate of Lime (Inferior Samples). 





No. 5. 



No. 6. 



No. 7. 



No. 8. 



No, 9. 





11-58 



11-80 



25-19 



9-22 



9-08 



Organic matter and salts of am- 



Bi-phospbate of lime (soluble) . 

 Neutral phosphate (insoluble) . 



Hydrated sulphate of lime- (gyp- 

 Alkaline sulphates, muriates, and 

 substance undetermined , « 



8-33 

 1-61 

 23-45 

 6-41 



26-64 



21-68 



5-21 

 2-58 

 0-06 

 5-07 



74-98 



0-37 



3- 87 



4- 74 

 28-32 



2-44 



1 35-44 



15-60 

 3-41 

 24-74 

 10-53 



35-50 



8 '66 



2-90 

 18-79 

 7-41 



r 50-08 



1 3-08 





100-00 



100-00 



100-00 



100-00 



100-00 



Nitrogen in the organic matter 

 and salts of ammonia . 



Neutral phosphate to which the 

 bi-phosphate is equal . 



Undeter- 

 mined. 



2-38 



0-44 

 3-79 



0-12 

 7-00 



0-40 

 5-03 



0-57 

 4-29 



The sample No. 5 has evidently been mixed v.ith kelp or 



