DISCOVERY REPORTS, VOL. XXIII 



PLATE XIV 



30° 



go: 



90 



120 



. ..,..■.,..>"■/-"■-■■ . / .,. mmm/u r iwriTi I I'rrrrI' r 



.■ Ml .f. . I m\m I ' l I < ' IMM'l'V \'y'\'\'\' ^■\' \'"> 



150° 



W 180-E 



ISO" 



0° ISOTHERM, winter months. 



