Elements, Symbols a?id Analyses. 179 



Analyse! , continued. 



33. Duck-Manure, Fresh. 



Water 



566.0 





17.0 



Organic substance . . 



. 262.0 



Magnesia 



3.5 



Ash 



172.0 





14.0 





10.0 





, . 3.5 





6.2 



Silica and sand . . . 



28.0 



Soda 



0.5 







34. 



Dove-Manure, Fresh. 





Water 



519.0 





16.0 



Organic substance . . 



. 308.0 



Magnesia 



, . 5.0 



Ash 



173.0 



Phosphoric acid . . . 



. 17.8 



Nitrogen 



17.6 



Sulphuric acid . . . 



3.3 



Potash 



10.0 



Silica and sand . . . 



20.2 



Soda 



0.7 







(d.) Analyses of Various Materials which are used for 

 Fertilizers. 



35. Peruvian Guano. 



Moisture at 100° C. . . .12.17 

 Total phosphoric acid . . 18.45 

 Soluble phosphoric acid . 1.54 

 Reverted phosphoric acid 5.92 

 Insoluble phosphoiic acid 10.99 

 Potassium oxide .... 3.46 



Total nitrogen 5.13 



Actual ammonia . . . . 3.94 

 Organic nitrogen .... 0.86 

 Nitrogen as nitric acid . 0.33 

 Insoluble matter .... 13.64 



36. Oak-Leaves. 



Moisture at 100° C. . . . 9.601 

 Organic matter .... 83.360 

 Mineral matter . . . . 6.840 



Ferric oxide 0.027 



Calcium oxide 0.548 



Magnesium oxide . . . 0.267 



Potassium oxide .... 0.549 



Phosphoric acid .... 0.058 



Nitrogen 0.930 



Soluble silica 0.018 



Insoluble silica ...... 4.333 



37. Sea- Weed. (Two samples.) 



1. 



Moisture at 100° C 12.05 



Nitrogen : . 1.66 



Phosphoric acid ... . r 0.44 



11. 



14.96 

 1.28 

 0.17 



