MEAN TEMPERATURE OF THE OCE 
Track of U-M.S 
.n th»$ 
rh. 
.iU $} 
SOTHERMAL LINES 
SIIO\S'I.N(. TIIK MKAN TKMI’KHyU'iniK FAH" 
(IF rilK OCKAN AT 
DEPTH OF 100 FATHOMS 
