128 



THE ANDES OF SOUTHERN PERU 



9 a.m 



DEC, JAN., 1897-1900 



q N 



3 p.m. 



8 a.m 



JUNE 11-SEPT. 11, 1912 



N 

 Noon 



Fig. 78 — Wind roses for Callao. The figures for the earlier pe- 

 riod (1897-1900) are drawn from data in the BoletJn de la Sociedad 

 Geografica de Lima, Vols. 7 and 8, 1898-1900: for the latter period 

 data from observations of Captain A. Taylor, of Callao. The diam- 

 eter of the circle represents the proportionate number of observations 

 when calm was registered. 



