W al' Kits I'Kallpu^nr” 
MEAN TEMPERATURE OF THE OCEAN 
1 
- Xss 
I SOTHERMAL LINES ^ 
SMOWI>'(. TIIK MKAN TK MPKH ATITRL (FAH«) 
f)F TIIK OCKAN AT 
DEPTH OF 900 FATHOMS ^ 
, .. .. — V,., . .. . ... 7X7 — - — 
/ . 4 %-^rry/r «A/>«m •/» fir*/ that 
TracJi of H.M.S Clmll ^g]j 
