5 ,8 DISCOVERY REPORTS 



occur, but if it was simply a question of reduced filtration then we should expect to find 



copepods recorded in the short region of poor phytoplankton in record 24, but we do 



not. Only isolated specimens of Euphausiacea, pteropods (Clione) and Tomopteris were 



recorded. 



Record 25 



Date: 26. xi. 26. 



Time: 1212-2050. 



Position: 51° 02' S, 13 26' W to 51° 05' S, 14 21' W. 



Distance by ship's log: 35-3 miles. 



Record 26 



Date: 27. xi. 26. 

 Time: 1225-2050. 



Position: 51° 15' S, 14° 41' W to 51' 17' S, 15 33' W. 

 Distance by ship's log: 40-6 miles. 



These two short records were taken over the same period of the day on two con- 

 secutive days. They are shown in Fig. 13. They both show a great increase in the number 



RECORD 25 



RECORD 26 



BO 



40- 



20 







GLOBIGERINA 



++ 



COPEPODA 



1000 



500 



lOO-i 



HOUR • 



AND ~ 



DATE Cd 



NOV. 26 NOV. 27. 



Fig. 13. Variations in the numbers of the predominant plankton organisms on Records 25 and 26 



k 

 o 

 in 

 o 



OJ 



