ThcVoya^.- ut H.M.S "I'hallenijVi " 



-■''■• !'■" < ■ ■'.:■■ ii: i ' n.n Map 13 



I SOTHERMAL LINES 



SHOWHTG THE MEAN TEMi'EUAirKE FAH? 

 OF THE til. QBE FOR 



J U LY. 



,ti, Buthalamsi 



