THE PROBLEM OF KRAKATAO 

 AS SEEN BY A BOTANIST 



BY 



C. A. BACKER 



FORMERLY GOVERNMENT BOTANIST FOR THE 

 FLORA OF JAVA 



PUBLI.SHED BY THE AUTHOR 



FOR SALE: 



VISSER & Co. 



WELTEVREDEN 



|AVA 



MARTINUS NIIHOFF 



THE HAGUE 



HOLLAND 



