r 



A 



Datr 



Jifrhtmrb few.peraturc 

 Jfn. of thrrmorneter ? C» 



Corrected ffiw^p^raiUfTfi' 



Cor. -^: .3 



SOUNDING WIRE. 



i;f. 



1 ATI 



TURNS. 



3<w 



lUUU 



1200 

 f V^i » 



1700 



igoo 



9000 



3300 



. DREDGE RQPE 



