132 



DISCOVERY REPORTS 



at which the cold species were found. I understand, however, that in the light of more 

 recent work by the ' Discovery II ' it is to be doubted whether there is actually a cyclonic 

 movement here in any way comparable in importance to that of the Weddell Sea. 



THE ORKNEY-SHETLAND REGION 



Under this heading are included all the stations taken in the area of scarce plankton 

 around the South Orkney and South Shetland Islands and the lines of intensive stations 

 in the Bransfield Strait. In Table VI the separate groups of stations are arranged in 

 order of the months in which they were taken, as in Table IV on p. 122, but the 

 Bransfield Strait stations are dealt with separately. Many of the warm-water species 

 (groups (a) and (b) in Table III, p. 107) do not occur at all in this region and are there- 

 fore omitted from the table. 



Table VI. Warm- and cold-water species in the Orkney-Shetland region 



The figures here emphasize the relative "coldness" of the 1 930-1 plankton rather 

 more clearly than the reduction of cold-water species as the summer goes on. However, 

 if the 1 930-1 season is considered separately it will be seen that in the Bransfield Strait 

 the cold-water species were much more strongly represented in December than in 

 February, and that in the latter month, although the Chaetognatha and Pareuchaeta 



