CHEMICAL RESULTS OF LAST CRUISE OF CARNEGIE 



mostly from the north. From stations 138 to 140 there is 

 a strong surf ace current toward the west, but this dimin- 

 ishes rapidly below the surface. The convection layer is 

 about 50 meters thick in the northeastern part of the sec- 

 tion, but less than 40 meters in the southwestern part. 



Section XV (Stations 142 to 146). --This is an east- 

 west section in the central North Pacific between longi- 

 tudes 161° and 141° west at about latitude 33° north. 

 The currents in this section are somewhat indefinite but 

 are chiefly in an easterly direction with a possible com- 

 ponent to the south. The convection layer is less than 

 40 meters in depth. 



Section XVI (Stations 118 to 125). --This section ex- 

 tends in an east-northeasterly direction across the 

 northern part of the North Pacific from station 118 (lat- 

 itude 42° 29' north, longitude 155'' 24' east) east of 

 northern Japan to station 125 (latitude 51° 58' north,' 

 longitude 150° 39' west) south of the Gulf of Alaska, and 

 extends along the Aleutian Islands from stations 122 to 

 124. The entire section lies in the northern part of the 

 North Pacific West Wind Drift which is well developed 

 to 500 meters. The convection layer is very thin, most- 

 ly about 10 meters. 



