ILLUSTRATIONS/ 



Plate I. 



Relief map of Taal Volcano. (From division of mines, Bureau of Science.) 



Plate II. 



Map of the vicinity of Taal Volcano showing iissures caused by the eruption of 

 January 30, 1911. 



Plate III. 



Maps of the crater of Taal Volcano showing changes wrought by the eruption of 

 January 30, 1911. 

 Fig. 1. Crater prior to January 30. (Taken from topographic map by S. B. 

 Coleman, Bureau of Lands.) 

 2. Sketch map of Taal Volcano made February 17, 1911. Dotted line 

 shows contour of crater lake on April 9, as observed by Doctor 

 Smith. 



Plate IV. 



Superimposed cross sections of crater before and after recent activity. Prepared 

 from Plate III. 



Plate V. 



Curves of earthquake occurrence as recorded in Manila during recent activity of 

 Taal Volcano, showing apparent relief of earth stresses at the time of 

 the main eruption. Prepared from data furnished by Father Miguel 

 Saderra Maso, Assistant Director of the Weather Bureau. 



Plate VI. 

 Taal Volcano in eruption, January 29, 1911. 



Plate VII. 

 Eruption cloud as it appeared from Banadero, January 30, 1911. 



Plate VIII. 

 Crater of Taal Volcano before recent eruption. Looking west. 



Plate IX. 



Crater of Taal Volcano as it appeared on May 5, 1911. Taken from same point 

 as Plate VIII. 



''Photographs by Charles Martin, photographer, Bureau .of Science, Manila, 

 P.I. 



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