Dote 



Machine. Reel, 

 Turns % Cor. • Depth 



Skol of had 

 Hot l oin 



ttotfom temperature 

 .Yo, of thermometer J \ 

 Corrected temperature 

 »lit Sttrfavr 

 Troo'/ or dredge 



BOUNDING WIRE. 



Cor - M 

 ^ t C 

 Drift 



0 



500 

 '/•»« 



Di 



l,(OU 



1. ;'») 

 J 500 

 IO00 

 jyuo 

 ihoo 



JOOU 



