130 



BEET-ROOT SUGAR AND 



fertilizer, which I shall hereafter describe, and which 

 has produced great results. 



An artificial manure, manufactured by Emil Giis- 

 sefeld, of Hamburg, by treating the guano from Baker's 

 Island with sulphuric acid, is in high repute in Ger 

 many. It is called Giissefeld's superphosphate of 

 Baker's guano, and is thus composed : 



Phosphoric acid, 19.9 



Magnesia and lime, 17.3 



Sulphate of lime, 42.1 



Water, 16.2 



Organic substances, 2.9 



Alkaline salts, i. 



Other matters, 6 



100. 



Three adjoining pieces of land, containing .63 of 

 an acre each, were cultivated with beets in the fol 

 lowing manner, and showed the given results. For 

 the convenience of the reader the table is made on a 

 basis of one entire acre : 



All manures having a basis of potassa, or that contain 

 soluble phosphates, are of the highest value in the cul 

 ture of beets. 



It is said that the use of sulphate of potash, as ma- 



