4 



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rrr lead 

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/!o// r/in tritijK i'ttl ii r> 



Xo. of Thermometer ^Ls / Cor. 



Corrected temperature ^ /, L 



Air *J 2— Surface *~] ^ Drift ft * -A '£X& 



SOUNDING WIRE. 



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03. ar 



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20O 

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 900 

 1 000 

 1 100 



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1500 

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1 St 11 1 



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220O 

 2300 

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DREDGE ROPE. 



POWKi 



2-/. J<3 



03 /<r 



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