O. ' i ^ 



-i ' 



THE PAMPEAX PLAIN. BUEXA ESPEKAXZA (,SAN LUIS PROVINCE). 



The first chanares. 



Photograph by the Author. 



P.\MPEAN PLAIN 



JUNIN (150 MILES WEST OF BUENOS AIRES, 



330 FEET ELEVATION). 

 The days. A line of dead dunes crosses the Junin district, following the course of the Salado. 

 They are indicated by light, sandy soil, very different from the clays of the north of 

 ■Buenos Aires province. Photograph by the Author. 



■Plate XVU. 



To face p. i-)^.. 



