30 
RESEARCHES ON THE COMPOSITION 
manure. A sample of a shipment brought to Tokyo from 
Yezo already in a slightly wilted condition was analyzed in 
the laboratory by Prof. M. Takeo. It contained, per cent 
of the fresh substance : 
Water . 50.75 
Organic matter. 11.21 
Band . 21.94 
Common salt (mechanically separated) 3.36 
Other mineral matters . 9.74 
Nitrogen . 0.852 
Potash . 1.630 
Soda .'. . 3.412* 
Lime. 0.726 
Magnesia . 0.043 
Ferric oxide . 0.052 
Phosphoric acid . 0.122 
Sulphuric acid . 0.086 
Silica.. 1.289 
Chlorine . 3.063* 
Total common salt . 8.41 
As tins kind of sea weed is not very rich in vegetable 
nutrients, it w T ould hardly pay the expense of transportation 
to distant places. Its application to the land near the 
shores is, of course, quite rational, but, as it is rich in com¬ 
mon salt, it may be slightly washed with water before it 
is used. 
* The mechanically separated salt is not included in these figures. 
