Discovery reports (1935-1936) Discovery reports discoveryreports11inst Year: 1935-1936 522 DISCOVERY REPORTS and four concentrations of Limacina are conspicuous. The Copepoda present a series of wave-like fluctuations along the whole course of the records. During the night of February io-n there is a general increase in the Copepoda, reaching a maximum about midnight; whilst this may well be due to vertical migration, there is a well-marked fluctuation superimposed upon this general increase. The densest concentration of Copepoda occurred at 1700 o'clock on the 10th. During the night of Febr
Discovery reports (1935-1936) Discovery reports discoveryreports11inst Year: 1935-1936 522 DISCOVERY REPORTS and four concentrations of Limacina are conspicuous. The Copepoda present a series of wave-like fluctuations along the whole course of the records. During the night of February io-n there is a general increase in the Copepoda, reaching a maximum about midnight; whilst this may well be due to vertical migration, there is a well-marked fluctuation superimposed upon this general increase. The densest concentration of Copepoda occurred at 1700 o'clock on the 10th. During the night of February 12-13 the numbers of Copepoda were nothing like so high as those for the ioth-nth, but the young euphausians were as well represented. Chaetognatha, Amphipoda and larger Euphausiacea were taken in small numbers. Records ii and 12 Dates: 18-19. ii. 26. Times: 2310-1330 and 1500-2000. Position: 51° 57' S, 320 31' W to 530 21' S, 34 53' W. Distance by ship's log: 109-4 miles. These two records form a continuous series in a line approaching South Georgia from the north-east, broken only by an interval in time when the ship stopped for soundings (1330-1500). The records show (Fig. 9) a dense belt of the diatom Thalassiothrix ant- 5157 S 32°3l'W THALASSIOTHRIX ANTARCTICA SHIP STOPPED FOR SOUNDINGS COPEPODA 30i oi 200 150 100- 50 0 EUPHAUSIAN LARVAE L MUCIN A
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