WHOLE VOL. 



LAKE AND RIVER LEVELS 



623 



SOUTH AMERICA 



LAKE TITICACA, BOLIVIA 



Maximum and minimum readings* 



Cm. above or below zero level 



Date 



Max. 



Hin. 



Date 



Max. 



Min. 



Authority, Ing-. Arthur Posnansky. Data supplied by Sydney M. Wood, O. E., Lake Bluff, lU. 



