230 



DISCOVERY REPORTS 



THE FIRST SURVEY 



The first survey was aimed at investigating the area immediately surrounding the Falkland Islands, 

 with some observations on the shelf between them and the mainland, and on the Burdwood Bank. 

 Dr N. A. Mackintosh, now director of research to the Discovery Investigations, was in charge of the 

 scientific work. With him were Mr E. R. Gunther specializing on the fishes, and Mr D. Dilwyn John 





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Fig. \h. Second trawling survey; station positions in June and July 1928. 



working on the invertebrates and the food and parasites of the fish. The normal routine at the trawling 

 stations was: first, a sounding; then a haul with the conical dredge; then, unless the bottom had 

 proved impossibly rough, an hour's haul with the ' trawl + accessory nets'. The trawling was followed 

 by a second sounding, and the collection of water samples from surface and bottom for the deter- 

 mination of temperature and salinity. A line of full hydrological and plankton stations between the 

 Jason Islands and Port Desire was also worked, so that with incidental stations elsewhere and minor 

 digressions to land the fur seal guard on Elephant Jason, and to mend nets, much work was accom- 

 plished in the period of just over two months devoted to the survey. 



