SPECIFIC GRAVITY OF SEA WATER. 



433 



This table shows a similar anomaly to that 

 which we noticed in the South Sea. That is, the 

 proportionately low temperature near the equator, 

 from 5° S. to 10" N. Perhaps the greater heat be- 

 tween 20° and 30° of southern latitude, might be a 

 remnant of the southern summer. But the con- 

 siderable increase of temperature in the zone, be- 

 tween 15° and 30° north latitude, is still more 

 remarkable. For though, towards the end of May, 

 the sun was near the zenith of those parts, yet this 

 influence, which could be only commencing here, 

 must have shown itself in the waters near the 

 equator, which the sun had just traveised at the 

 time of those observations (in April), which was 

 by no means the case. The temperatiu'es at the 

 surface indicate indeed this influence of the sun, 

 being the highest at the equator (22^" R.), while 



VOL. III. F F 



