OF SEVERAL JAPANESE FERTILIZERS. 
11 
II. Kitchen Refuse from Fish. 
As fish form to a large extent the food of the Japanese 
people, the refuse left uneaten consisting of the heads 
vertebrae, tails, and some adhering flesh, if collected and 
properly prepared, might become an important article in 
internal trade and would represent a manure closely related 
to the so called “ fishguano ” from Norway. In order to 
call attention to the agricultural value of these materials, 
Mr. I. Honda has analyzed specimens of refuse left from 
the following 9 kinds of marine fishes : 
No. 
Japanese 
name. 
Zoological name. 
Average 
length, 
Meters. 
1. 
: 
Seriola aureovittata. 
0 25—(1 
•> 
Aji . 
Caranx tracliucus. 
0.12—O.l' 
3. 
Hiraine . 
Pseudorliombus olivaeeus . 
0.15 
4. 
Sawara.... 
Cybimn nipouicmn . 
0.3 —0.5 
5. 
Maguro . 
Thynuus tlmnnica . 
0.8 —1.3 
6. 
Karei . 
I’lenronectiis yariegatus. 
0 3 
7. 
Koclii . 
Platycephalus guttatus . 
0.3 —0.4 
8. 
Kurodai . 
Chrysophris liasta. 
0.3 —0.4 
9. 
Isaki . 
Prystipoma japonicum. 
0.2 —0.3 
All these fishes had been boiled (uisakana), except No. 
5, from which the raw flesh had been separated. Of the re¬ 
fuse an equal number of heads, vertebrae, and tails of each 
species were made air dry in a water stove and reduced to 
a fine powder, in which the organic matter, total ash, 
nitrogen, phosphoric acid, lime, and magnesia was deter¬ 
mined in the usual way. The results were as follows :— 
