Gates: Pioneer Vegetation of Taal Volcano.] 
[Phil Journ. Sci., IX, C, No. 5. 
PLATE V. DIAGRAMS SHOWING THE SUCCESSIONS EXHIBITED BETWEEN THE PLANT 
ASSOCIATIONS ON TAAL VOLCANO, PHILIPPINE ISLANDS, 1914. 
The approximate distribution in altitude is shown by the extent of the lines with reference to 
the scale on the left. The relative abundance of the associations at various altitudes is indicated 
by the thickness of the lines. Arrows pointing above the horizontal indicate succession to a 
higher genetic association. 
