THE VESSEL, THE APPARATUSES AND THEIR APPLICATION. 



*5 



Measurement of series or ascertainment of temperatures in and taking samples of water 

 from intermediate layers was likewise effected with the vessel lying head to wind. 



For this purpose was used the aforesaid thermometer line; the end of the line was taken from 

 the reel on which the line was wound and which was placed athwartships before the superstructure, rove 

 through various leading blocks abreast of the drum of the trawl-winch, and thereafter through a block 

 at the lower end of an accumulator on I / 4 part of the fore-yard on the port side and down to the deck, 



Fig. 8. The large trawl comes up torn. 



Fig. 9. The small trawl. 



whereon the reel was braked. A sea-lead of 40 pounds weight was attached to the end of the line, 

 and the thermometer and the water-bottle were put on above the lead. When everything was ready, 

 the line was put over the side, the brake was set free and the line allowed to run out till the mark, 

 at which the next set of instruments were to be attached, was at the rail, when the reel was braked. 

 After the next set of instruments had been attached to the line, we proceeded as before, when again a set 

 of instruments were attached, upon which so much line was allowed to run out that the instruments 

 would come to the intended depth. More than three sets of instruments were never used at a time, 

 that we should not by possible mishaps run the risk of losing a large number of instruments. 



