Jan., 1919] Effects of the Eruption on Vegetation 209 



2. An area of 7,300 square miles was covered with ash so 

 deeply as to destroy the smaller plants. 



3. Death-dealing blasts from the volcano killed trees 25 

 miles away, destroying the forest over an area of more than 

 1,500 square miles. 



4. Ashfall, so heavy as to obliterate all herbaceous plants 

 except on steep hillsides, etc., covered an area of about 970 

 square miles. 



5. Mud flows so hot as to reduce to charcoal all vegetation 

 with which they came into contact were poured out over an 

 area of about 53 square miles. 



6. An area of about 39 square miles, in which there is no 

 .trace of former vegetation, was probably swept by fires of great 

 intensity, making the total area in which all life was annihilated 

 100 square miles. 



