M EAN TEMPERATURE OF THE OCE 
.! HV.S (' 
ic eC.‘:C««sor 
I SOTHERMAL LINES 
SMOWI.Nf; THK, MKAN TKMl'KHATHKK (FAH«) 
OK THK. or KAN AT 
DEPTH OF 500 FATHOMS , 
Tracli of ILM.S. 
Av^rtut^ m thus 
