Fig. 4. Winds recorded during the period of survey. Left, August and September; centre, May, June and July (July 

 12-17 excepted); right, July 12-30. The arrows represent the residual wind (expressed as mean vectors); in the open 

 sea and in the coastal zone, for observations in every two degrees of latitude ; and at the Chilean meteorological stations 

 for observations during a fortnight prior to the ship's arrival (see text and Appendices IV and V). 



