294 Dr Gairdner^s Observations during a Voyage from 



Since arriving here, there has been no leisure for reducing into a 

 similar tabular form my observations in the North Pacific. The 

 causes formerly referred to deprived me of many favourable op- 

 portunities which might have been embraced, for ascei'taining 

 the temperature of the ocean at different depths. I had several 

 opportunities of remarking the slight effect of great atmospheric 

 changes upon the height of the barometrical column in tropical 

 latitudes ; this was especially striking in the heavy rains that 

 we experienced in the North Atlantic, in about 6° — 8° north lati- 

 tude.' On one ■ occasion, I collected 1140 grains of water in a 

 basin of a circular form, 9.3 in diameter, in 12 hours, the baro- 

 meter remaining stationary at 30.00 — 29.99. This was on the 

 night of the 26-27th October 1832,Lat.7° 20' N., Long. 20° 3' W. 



