Ratums received between 5 December I956 and 21 October 1957 

 ea« listed in the Appendix. 



The records for the cruises made during the 1930's are 

 believed complete so far as returns are concerned. However, the ori- 

 ginal logs do not adequately record all release positions; consequently, 

 in scMie instances jjositions of bottle-drop stations from which there 

 were no returns cannot be listed. This is particularly true in the 

 cases where bottles were distributed in pairs every 2 miles along a 

 track. 



Data for the Albatross III cruises made during the 1950 's 

 are complete in edl respects both as to releases and recoveries. 

 During this period bottles were released only at stations, which 

 fomed a fairly unifoim grid over the area of stvidy. 



BOTTLE TYPE AUD DISTRIBUTION 



The bottles used were those commonly employed for carbonated 

 drinks. They were of clear glass and measured approximately 22 cm. 

 high and 6 cm. in diameter with a capacity of 8 fluid ounces. 



Of the bottles released on the 1931-3^ cruises, most were 

 equipped with drogues in en effort to reduce windage. More often 

 than not, however, the drogue had been lost sometime before the bottle 

 was recovered. 



In figure 2 the components of the bottles used during the 

 1950 '8 are shown; a completed drift bottle is shown at the right. 



