EXPERIMENT STATION, 



65 



Analyses. 



Moisture, .. 



Organic matter and loss in analysis 



Sand, 



Lime. , 



Magnesia, 



Oxide of Iron,. _. 



Soda, 



Potash, 



Chloride of Sodium (common salt), . 



Sulphuric aci'l, 



Phosphoric acid, 



Nitrosren, 



Ammonia equivalent to Nitrogen, . . 



1860 



Eel-grass. 



17.75 



64.90 

 5.72 

 2.7.3 

 1.82 

 0.72 

 1.14 

 0.94 

 2.73 

 0.54 

 1.01 



100.00 



1862 



Kelp. 



9.81 

 71.41 

 0.13 

 1.40 

 0.20 

 0.26 

 1.64 

 2.46 

 5.93 

 6.19 

 0.57 



100.00 



1.77 

 2.15 



1871 



Eock-weed. 



11.01 

 69.10 

 1.59 

 1.10 

 1.19 

 0.37 

 2.22 

 2.18 

 4.14 

 6.82 

 0.28 



100.00 



1.20 



1.46 



Sea-weed as ordinarily oathered is a mixture of various plants, 

 and more or less animal matter, living and dead, adheres to it, so 

 that there is considerable variety in the material and in its com- 

 position. Where sea-weed is thrown up in large quantities too 

 remote from cultivated land to be of direct use as manure, it may 

 be burned and the ashes transported to some distance with a. 

 profit. Sea-weed is, however, rather difficult to burn and the 

 ashes are likely to be quite variable in character and value. 



Reduction of Ungeound Bones. Bone Black. 



The following questions were received and answered substan- 

 tially as follows, through The Connecticut Farmer : 



" What is the best way of rendering fresh bones available for 

 land? Is it not practicable to dissolve them with sulphuric acid 

 when there is no mill near at hand? How much acid is required 

 per hundred pounds of bones, and what is the modus operandi f 

 How is ' bone-black ' prepared ? 



Answer. 



It is not an easy matter to reduce fresh whole bones to a suita- 

 ble form for use as a fertilizer. Treatment with sulphuric acid 

 does not appear to be practicable. The acid, suitably diluted. 



