OF SEVERAL JAPANESE FERTILIZERS. 
Percentage composition of the ash : 
Potash . 
Loaves. 
. 13.78 
Stems. 
28.30 
Soda. 
. 0.99 
6.91 
Lime . 
. 2G.00 
18.54 
Magnesia. 
. 12.85 
8.23 
Ferric oxide. 
. 3.1 1 
1.11 
Mangano-manganic oxide. 1.25 
0.60 
Phosphoric acid . 
. 6.03 
7.55 
Sulphuric acid.... 
. 3.26 
4.19 
Carbon dioxide.... 
. 16.15 
15.04 
Silica and sand.... 
. 12.50 
4.69 
Chlorine . 
. . 3.40 
3.57 
The ash prepared from the stems has accordingly little 
more than twice the val ue of ordinary wood ashes. When 
used on the farm itself, 
it is, of course, not advisable to 
incinerate them, unless 
the fields are 
suffering from an 
excess of humus and wetness. 
The residues left after dissolving 
the indigo in the 
dyer’s vat, constitute a 
deep blue, soft 
mass, in which on 
aii average of 5 specimens, analyzed by Mr. F. Mori, the 
following composition was found : 
Water . 
In the fresh substance. In the dry matter. 
. 44.62 — 
Organic matter . 
. 18.48 
33.37 
Ash*) . 
. 36.90 
66.63 
Nitrogen . 
. 0.632 
1.141 
Potash . 
. 0.47 
In 100 p. of ash’) : 
1.28 
Soda. 
. 0-27 
0.73 
Lime. 
. 10.62 
28.78 
Magnesia. 
. 0.06 
0.16 
Ferric oxide. 
. 1.47 
3.98 
*) Not free from carbon dioxide. 
