AGRICULTURE AND DENDROLOGY. 35 
For 147.38 Yen we obtain in the form of fish manure 
70.06 kuwamme of nitrogen and 26.94 kuwamme of phos¬ 
phoric acid. Taking the value of the two nutrients to stand 
in the ratio 2.5 : 1, and omitting to include in our calculation 
the very small content of fish manure in potash (0.7-0.8 n / 0 ), 
the price of 1 kuwamme is found to be 
nitrogen. 1.825 Yen. 
phosphoric acid. 0.730 ,, 
In the oil cakes and brans the prices are higher, viz : 
nitrogen .. 3.000 Yen. 
phosphoric acid . 1.200 „ 
Calculations made in the same way for the other years 
give the following prices per kuwamme of each nutrient : 
Year. 
Fish manure. 
Oil cakes & brans. 
Nitrogen. 
Phosphoric 
acid. 
Nitrogen. 
Phosphoric 
acid. 
1882 
1.825 
0.730 
3.000 
1.200 
1883 
1.427 
0.571 
1.923 
0.769 
1884 
1.282 
0.513 
1.027 
0.651 
1885 
1.310 
0.524 
1.833 
0.733 
1886 
1.430 
0.572 
1.847 
0.739 
1887 
1.840 
0.736 
2.070 
0.828 
Average. 
1.523 
0.608 
2.050 
0.820 
Compared with fish manure, the oil cakes and brans 
have, according to these figures, a far higher price, obviously 
owing to their application for the feeding of live-stock and 
for various domestic purposes. They ought not to be used 
as manures at all, unless they could be got for about 3 / 4 of 
their present price. The retail cost of fish manure, too, is 
not so low as might perhaps be expected having regard to 
the richness of the Japanese waters in fish ; the price for the 
nitrogen contained in them amounts in German money 
(1 Yen = 3.10 Mark) to 1.26 Mark per kilogram, and ac- 
