and an even better evaluation can be made from the 

 amount taken through July (20 to 5'0 percent of the 

 year " s catch) o 



do In the Northeastern Sea Area^ in years when the water 

 temperatures are high during the winter and summer up 

 until Julys ^^^ bulk of the catch is taken in July, 

 but in years when the temperatures are low^, the main 

 catch is made in August and Septembero If tempera- 

 tures are low during September and Octobers the fishing' 

 season ends early,, and if the temperatures are high during 

 these months.: the season is prolonged. 



eo In years when the ten^eratures are low in the North- 

 eastern Sea Area^ the skipjack schools remain for long 

 and school densely in the southern sea areas, but the 

 number of fish that move into the northern areas is 

 con?)aratively small o 



f o The trend for the fishing season in Miyagi Prefecture 

 to reach its peak later and to end earlier in successive 

 years is paralleled by a drop in the water temperatures 

 at Enoshima as averaged by five-year periods o 

 (Table of water temperatures and dates of the fishing 

 season in Miyagi Prefecture) 



Notes (a) In the Northeastern Sea Area in years of 

 abnormally low water temperatures (1931 and 193U)s "the main 

 summer fishing grounds are located to the southj not moving 

 north of the waters off Kinkazanj and they are far offshore. 

 In such years fishing in the northern sea areas is poor^ but 

 in the southern sea areas it is comparatively good because the 

 schools remain there for a long timeo 



(b) In years of abnormally high water tenperatures 

 (1933 and 1937) s the fishing grounds reached their farthest 

 north position (ii2^ No latitude), and the fishing was better 

 in the northern than in the southern sea areas o In such years 

 first catches come early, the end of the fishing season is 

 delayed, and the fishing season is generally prolonged, pro- 

 ducing a large catch for the yearo 



(c) Past years of high and low August "surf ace 

 water temperatures were as follows g 



1930 high (approaching 1933) 



1931 low (approaching 19 3U) 



1932 high 



1933 abnormally high 



193U abnormally low (period of low temperatures 

 continuing much longer than in 1931) 



lift 



