322 v PAUMOTU GROUP. 
refer the reader to the tabular results, only mentioning such as are 
generally interesting. 
On the 18th, the surface water was 70°, and at two hundred and 
ninety fathoms depth, 50°. 
On the 24th, in longitude 99° 39' W., we found the current setting 
southeast half a mile per hour, and directly against the wind. Our 
latitude was 15° 35' S. 
Until the 29th we had moderate breezes. The current this day 
was found east northeast, one-third of a mile per hour. At 9 p. m. 
the wind came from the west. This evening we had a beautiful 
display of the zodiacal light. It was very bright ; its altitude was 
25° ; the upper part of the cone was not well marked, and its apex 
was not defined; the breadth of its base was 30°. A fair breeze 
from the southwest continued all the next day, when we had reached 
the longitude of 113° 29' W., and latitude 17° 36' S. 
On the 31st, we passed over the locality of an island marked on the 
charts of Arrowsmith. Although we ran over its position with the 
squadron spread so as to cover an extent of thirty-five miles in 
latitude, and on its parallel for several degrees, lying-to at night, 
nothing whatever was seen to indicate land, and we believe that it 
does not exist. 
On the 4th of August the current was found north one-third of a 
mile per hour. 
^perature at surface, 
75° 
'>0 fathoms below surface, 
74 
100 " " " 
. . 73* 
200 " " •* 
61 
300 " " " 
50 
On the 5th, the current was two-thirds of a mile per hour, to the 
north-northeast. 
The winds on the parallel of 18° cannot well be termed the Trades, 
for at this time of the year they will be found very variable, though 
prevailing generally from the eastern quarter, with a long swell from 
the southwest. The upper stratum of clouds were generally seen 
flying from the southwest. The deep sea temperature on the 6th, 
at three hundred and fifty fathoms depth, was 46°, surface 77°. 
The 7th proved a calm and fine day, throughout which experi- 
ments were made hourly, to ascertain the depth at which a white 
object could be seen; the altitude of the sun was taken at each 
