260 The National Geographic Magazine 



pre. dc macou 



SE POINTE 



LEGEND 



Caatep 

 © Mud C«Tfp 



fuma&oles 

 »— Mud Runs 



at on i ine 

 — Singe Line 



Ash Line 



2% miles to the iucli 



Map Prepared by Robert T. Hill Showing Zones of Devastation in Martinique 



sprinkling of lapilli from the aggregate 

 eruptions. This is not conspicuous or 

 discoloring, however, except within an 

 area a mile or two bej'ond the mud- 

 coated area and over the latter. The 

 quantity and extent of ashes erupted 

 cannot be estimated, nor is it material 

 at present to do so. 



Mud Rivers in the Devastated Plain. — 

 The Rivieres des Peres, at the northern 

 limit of the city, and the Seche, within 

 the amphitheater, have been the sites of 

 mud torrents from the eruptions. 



The coastal extension of these stream- 

 wa}'S is so filled with mud that their 

 former valleys are filled up level with 

 the low divides, so that the}' are practi- 

 cally obliterated. What was the lower 

 valley of the Riviere Blanche for a mile 

 back from the sea is so filled up that 

 now it is a convex elevation near the 

 sea, built up by successive mud flows, 

 so that streams of the latter run down 

 from it into the Seche. 



The Riviere Blanche is still flowing 

 mud in intermittent gulps from the 



