Hhiil nf lead, 

 Bottom 



Depths,'/ '7 



JTo- of themwmeter / Sre /o O&r. — 



Corrected iempertUuj'e a ' 

 Air Sitrfaea 4^* DHfh 



Trthwl or dredge g-^^ /^i^ ^J,*'*} 



fiOUKDING WIRE, 



DOWN. 



3^ 



UP, 



0 

 100 



coo 



OCH) 

 700 

 800 



m 



1000 

 1100 

 1200 

 1300 



um 

 \m 

 laoo 



1700 

 IHOO 



inoi) 



^2(300 

 SLOO 



urn 



V 



