Ay 



Machine. 

 Turns Cor.+ 

 Siiot ftr Utitl 

 Bottom , 



Bottom, temperature 7f*^ 

 No. of thermometer /Qfg/f 

 Corrected temperature Jf*^ 

 Mr t Surface ■ ''/ : ' 



Trawl or dredge 



iirpth 



Cor,- .3' 

 Drift 



