1937 (Table 4). From 141,000 to more than 162,000 places were reported 
in operation (Table 14). 
TABLE 14 
Humber of Establishments Engaged in Aquiculture 
Area and Value of Products 
Humber of 
Establishments 
(tsubo) S/ 
Area 
Value of Product 
(yenT~ 
1935 
1936 
1937 
1938 
1939 
161,779 
162,326 
159,038 
158,629 
141,000 
157,761,107 
154,930,254 
149,314, 974 
151,201,913 
141,352,000 
25,534,550 
25,551,596 
28,974,262 
30,110,429 
43,026,000 
Source: Japan-Manchukuo Yearbook , 1940; Far East Yearbook , 1941. 
a/ A tsubo equals 3.95 square yards. 
The more important items produced were carp, eel, ayu and trout; 
various edible shellfish (particularly asari and oysters); seaweed (chiefly 
Porphyra species); goldfish; pearl oysters and pearl shell (Table 15). 
Tokyo, Shizuoka, Aichi, Mie, Chiba and Hiroshima prefectures were the 
largest producers, each having a yeild valued at more than a million yen 
in 1937 (Table 16). 
Darn Culture . The annual production of carp was about 
11,000 - 12,500 metric tons; in 1940 the production, lower than in other 
recent years, was 10,504 tons (Table 15). Carp were raised in rearing 
ponds, ricefields and in reservoirs, lakes and rivers; in 1936 almost 
150,000 places were raising carp. Shigp, Miyazaki, Hiig&ta, Gifu and 
Akita were important in this production as suggested ly the large number 
of hatcheries (Table 17). Chiba and Gumma prefectures were also large 
71 - 
16-031 P95 bu 
