CONTENTS. 



Preface. 



I. Introduction 1 



II. The vegetation of Krakutao before tlie catastrophe of 



Aug. 27th 1883 15 



III. The destruction of the original vegetation of Krakatao. 18 



IV. The expedition of Treub in 1886 36 



V. The trip of Boerlage to Lang Eiland in September 1896. 84 



VI. The expedition of Penzig, Treub, Raciborski, Boer- 



lage and Clautriau to Krakatao, Lang Eiland and 

 Verlaten Eiland in March 1897 88 



VII. The trip of Colenkin and Valeton to Krakatao in 1905. 129 



VIII. The expedition of Ernst, Pulle, Campbell and Backer 



to Krakatao in April 1906 142 



IX. The expedition of Fransen Herder schee, Holtappel, 



Cool, (acobson, Demmeni and Backer in May 1908. 178 



X. The stay of Mr. Johann Handl on Krakatao from 1915 



till 1917 196 



XI. The excursions of Mr. Docters van Leeuwen and his 



companions to Krakatao in 1919 201 



XII. Further publications on the revegetation of Krakatao. . . 273 



A. Dr. W. Docters van Leeuwen, The Galls of Krakatau and 



Verlaten Eiland in 1919 273 



B. Dr. W. Docters van Leeuwen, The Galls of the Islands of 



the Krakatau-group and of tlie Island of Sebesy 275 



C. Dr. K. W. Dam merman, The fauna of Krakatau, Verlaten 



Eiland and Sebesy 276 



D. Max Fleischer, Beitrag zur Laubmoosflora der Vulkaninsel 



Krakatau 277 



E. Dr. W. Docters van Leeuwen, I he Vegetation of the Island 



of Sebesy 278 



Index of plant-names 287 



