of relatire current computations near the equator, the results between 3*^ 

 and 3°S have not been included in the figures u 



The major currents are immediately recognizable on either the relative 

 current sections or the dynamic height profiles. The western sections 

 (FigSo 2 and 6) show a moderately strong North Equatorial Current flowing 

 toward the West between latitudes 15°N and lOg-^N , Between 10^*^ and 52-°N 

 the strong Equatorial Countercurrent flows towards the East, South of the 

 countercurrent to about 2ir°S is the South Equatorial Current. 



North of the North Equatorial Current is a broad region of nearly slack 

 water, A slight easterly flow between 16"^ and 19*^ and dovm to about 50 m. 

 is indicated. This may be a true feature, but the magnitude of the current 

 is about as small as errors inherent in the method of relative current 

 determinations o A similar easterly flow of considerable magnitude is 

 apparent between approximately 2^ S and 4^ S. However, it should be pointed 

 out that observations of internal waves during this cruise revealed oscil- 

 lations in the thermocline of a magnitude large enough to cause the fictitious 

 appearance of such a current if the hydrographic stations chanced to have been 

 spaced with respect to the phase of the oscillation in a manner conducive to 

 producing this feature. 



On both the eastern (Figs, 3 and 7) and western sections, the counter- 

 current is strong only in the layer above 200 m,^ no speeds greater than 

 7 cmo/sec, appearing below this depth„ At slower speeds the northern half 

 of the countercurrent reaches to at least the 700 db. surface though it is 

 very slow throughout the greater depths. The South Equatorial Current 

 appears to extend northward beneath the southern portion of the counter- 

 current. 



The swiftest part of the countercurrent appears at about 50 m. below 

 the surface and near its southern boundary. Rather unexpectedly a large 

 an ti eye Ionic shear is indicated. 



It was mentioned in the discussion of the bathythermograph sections 

 that along the eastern station line the botindary between the North Equatorial 

 Current and the countercurrent is complicated by the existence of a large 

 horizontal eddy. The dynamic profile and current sections show this eddy 

 centered slightly north of 11°N , The flow in the eddy is, of course, not 

 geos trophic. Due to the effects of curvature and frictional forces, the 

 current speeds indicated in the eddy may be appreciably in error. 



Temperature Sections (Figs , S and 2) ° 



These cross sections are based on temperatures from reversing thermo- 

 meters. The isotherms above 300 ra, show, of course^, the same general 

 features as the bathythermograph sections. 



The cold surface water at the equator is strikingly in evidence. 



Inorganic Phosphate Sections ( Figs , 10 and 11) ? 



Both sections show the same general features. The surface layer is 

 generally low in phosphate and there is an increase in concentration with 



