THE PHILIPPINE 



Journal of Science 



A. Chemical and Geological Sciences 

 AND THE Industries 



Vol. VI APEIL, 1911 No. 2 



THE ERUPTION OF TAAL VOLCANO, JANUARY 30, 1911, 



By Wallace E. Peatt. 

 {From the Division of Mines, Bureau of Science, Manila, P. I.) 



CONTENTS. 



Inteoductiox. Ejecta. 



Sources of information. Character. 



Location and brief description of Volcanic bombs. 



Taal Volcano. Distribution. 



The Erlttiox. Earth Fissures. 



Narrative. Description and trend. 



Eruption cloud. ^Ind cones or craterlets. 



Electrical phenomena. Chaxges ix Elevatiox. 



Earthquakes. Changes ix the Cratee. 



Water wave. Loss or Life. 



RiSLTlfi. 

 INTRODUCTION. 



The active volcano Taal in southwestern Luzon, began throwing out 

 steam and mud on January 27, 1911, and continued in eruption with 

 increasing violence during Januan^ 28 and 29, culminating in an ex- 

 plosive outburst early on the morning of January 30, which laid waste 

 the surrounding country over an area of 230 square kilometers, killing 

 practically all life within this area. Mud or ashes spread over more 

 than 2,000 square kilometers in southwestern Luzon. The activity 

 diminished gradually to a state of normal quiescence by February 6 to 8. 



Sources of information. — This paper embodies personal notes made 

 during the two weeks immediately succeeding the eruption. In this 

 time every part of the devastated region was visited. Information as to 



102300 63 



