45 



Table of ice and other obstructions, 1932 — Continued 



OCEANOGRAPHY 



The General Greene was equipped with the following oceanographic 

 instruments: One fathometer (Fessenden type) from Submarine 

 Signal Co., Boston; 2 electric winches with 2 steel wires 12,000 feet 

 each; 12 new Nansen water bottles; about 20 old Greene-Bigelow 

 water bottles; 12 new Richter & Wiese protected deep-sea thermome- 

 ters; 6 new Richter & Wiese unprotected thermometers; about 12 

 old Richter & Wiese and Negretti & Zambra deep-sea thermometers 

 (without auxiliar}' thermometers); 1 salinometer for determination 

 of the salinity of sea water (same as described in Bureau of Standards 

 Journal of Research, vol. 5, No. 3); 2 sets of titration outfit from Mar- 

 tin Knudsen's Laboratory in Copenhagen; about 600 citrate bottles 

 for sea water samples; meter wheels; surface thermometers; etc. The 

 instruments worked perfectly all the time. Not a single thermometer 

 was broken and no water bottles were lost in spite of the rather rough 

 weather during which most of the 120 oceanographic stations had to 

 be taken. An excellent help for the good results of the scientific work 

 was the laboratoiy on board, which was arranged in one of the officer's 

 staterooms just before leaving Boston, Mass. Without this laboratory 

 it would have been difficult to have made the salinity titrations at sea. 



During the first part of the season the General Greene was occupied 

 with ice scouting and ice-patrol work. We tried at the same time to 

 take oceanographic stations. The weather was, however, very rough 

 and cold, and it was difficult to handle the water bottles and the 

 winches. The station work was, therefore, postponed to the time 

 when the ice-patrol cutters could relieve us of the ice scouting and ice 

 report work. 



All possible care was taken in order to obtain the most accurate 

 observations. On each wire we ordinarily used 6 Nansen water 

 bottles with 2 Richter & Wiese thermometers attached to each 

 water bottle. On every second water bottle (Nos. 2, 4, and 6 from 



161465—33 4 



