ITii Voyage ol H M 5 "Cualli nger" 



A " ■i' 1 "' 11 ' ''"■' nl.iii..ii Map 34- 



ISOBAR IC LINES 



AND PR EVAI LING WINDS 



'1 THE NORTH POLAR REGIONS FOR 



APRIL 



* Variable Winds • Calms 



A I'.'i'- ill 



