Genth.] 



86 



[Feb. 6, 



0.16 Phosphorus. 



No. 14. Bull Bank. 



The samples for investigation, five in number, were taken from piles of 

 ore taken out about thirty years ago. One consisted of a beautiful 

 fibrous limonite of a pale hair-brown color and silky lustre, much resem- 

 bling that from the Lytic Bank, but of fibres two inches in length. The 

 others represented the amorphous ores. They are compact, of various 

 shades of brown, without lustre ; they contain more or less cavities, 

 partly filled with ochreous ore of a yellowish or reddish color. The 

 amorphous ores have, on being breathed upon, a strong argillaceous 

 odor. 



a. Pure Fibrous Limonite. 



= 57.04 Metalliclron 



0.035 Phosphorus. 



100.00 

 100 Iron contained 0.061 Phosphorus. 



Z>. Average of the five Samples. 



Ferric oxide 

 Manganic oxide 

 Cobaltic oxide 

 Alumina 

 Magnesia 

 Lime 



Phosphoric acid 

 Silicic acid 

 Quartz 

 Water 



74.85 

 0.29 

 0.21 

 2.42 

 0.12 

 trace. 

 0.24 

 4.15 

 5.92 



11.80 



= 52.40 Metallic Iron. 



= 0.105 Phosphorus. 



100.00 

 100 Iron contained 0.20 Phosphorus. 



