228 CALIFORNIA ACADEMY OF SCIENCES  [Proc. 4TH Serr. 
pace with the sun on its way north. When we were anchored 
at Tagus Cove on the west side of Albemarle Island during 
portions of the months of March and April, a decrease of 14° 
in the temperature of the water was noticed in nineteen days. 
The northern islands of the group were visited but once, and 
that for a period of eleven days. During this time the water 
was on the average 6.5° warmer than at the southern islands 
for the corresponding period just preceding. The difference 
was due to the fact that the northern islands lie in the lower 
limits of the Panama current. The following table shows the 
continued rise in the temperature of the water for some dis- 
tance north of this part of the Galapagos. These observations 
were taken on the homeward voyage at 12 m. on the dates 
mentioned in the table, this being the only time during the 
day when we knew our position with any degree of accuracy. 
Of course many of these observations have no bearing on the 
climatic conditions in the Galapagos Islands, but they may 
nevertheless be of interest. 
SURFACE TEMPERATURES, 1906 
Lat. N Long. W Date Water Air 
Deno’ 03:3) (6! Sept. 26 78 76 
Sigh ots eee a kd Sept. 27 80 79 
hie 2s O70 AS! Sept. 28 80 76 
9° 22! 98° 25’ Sept. 29 81 79 
9%, p59! 100% 25” Sept. 30 82 80 
S53? 1022 OF Octoy ct 81 S125 
12%, 19" Ue eg Oct. 52 81 81 
14° 24’ 106° 42’ Octign.> 82 81 
14° 24’ TORE C55 Oct. 4 82 83 
14° 49’ UOT PRY. Ockans 83 83 
14° 457 108° 30’ Oct: 16 es 81 
1 Es od NODS; 012? Osa 75 81 
14° 40’ 109° > 267 Oct: +8 79 81 
14 ade 109° 38’ Oct 9 78 81 
14° 26’ 1092 (2G ~Oct. 10 19 82 
14° -36' 109° 42’ Octal 79 82 
i) gene HOR Oct-12 81.5 82.5 
15S 36" UNO alent Octal 83 83 
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