Ttirfti' Cor.-'. /kpfh ^^<^ 



JJoUoiti tejtipera^wre ^ f * ^ 



iN'o. of tli&niiometer / / Cor. J 



Corrected temper'atjt^/e 



Air St4*rfa€fi Drift 



Trmiil or drcd£e 



BOITNDINa WIRE. 



DREDGE ROPE. 



u 



100 



\m 



400 



600 



tm 



700 



wo 

 \m 

 uoo 



1300 

 1300 

 1400 

 t^DO 

 1000 

 1700 



laoo 



1000 

 3000 

 SI CO 

 SaflO 

 2.'J0O 



%m 



