Fig. 3. The Stevenson meteorological shelter on the quarter- 

 deck, housing instruments to measure temperature and hu- 

 midity of the air 



Fig. 1. Paul at the evaporimeter. The evaporation of sea 

 water is enormous--at the equator it appears to be about 

 seven and one -half feet per year. Facts concerning evapo- 

 ration are essential to an understanding of majiy problems 

 in the field of meteorology 



Fig. 2. A Richter and Wiese deep-sea reversing ther- 

 mometer protected against pressures encountered 

 in the depths of the ocean. (A) Sea water thermom- 

 eter, (B) auxiliary thermometer for making cor- 

 rection for air temperature on deck, (C) point at 

 which mercury capillary breaks on reversal, (D) 

 mercury shield which protects bulb from pressure 

 of the sea 



Fig. 



snapper ty{)e of bottom sampler 



19 



