IX. THE EXPEDITION OF FRANSEN HERDERSCHEE, 

 HOLTAPPEL, COOL, JACOBSON, DEMMENI 

 AND BACKER IN MAY 1908. 



Janrverslaq von den Topogrnphischen Dienst In Ned. Indie (Year-book of the 

 Topographical Survey Service in the Dutch Indies) 1908, p. 150. 



In May 1908 a topographical and geological survey was made 

 of the three islands of the Krakatao-group. The topographical observ- 

 ations were made by A. Fran sen Herderschee and H. W. 

 H o I t a p p e I, accompanied by the photographer j. D e m m e n i 

 and some native underlings. Mr. E. R. Jacobs on accompanied the 

 expedition in the quality of a zoologist. Shortly before the departure 

 of the expedition Prof. T r e u b ordered me to join it for the purpose of 

 making botanical collections. As 1 had neither the time nor the expe- 

 rience necessary for procuring the outfit and the food required for 

 camping on an uninhabited island I could take part only in the beginning 

 of the trip but had to leave before the top was reached. The experiences 

 of the expeditionists are recorded in the paper mentioned above. 



\Ve were conveyed to Krakatao by the small steamer Java which 

 left Tandjong Priok on May 2nd 1908 and in the morning of the 

 following day reached Telok Betong (South Sumatra) where some 

 officials of the Topographical Survey Service embarked. Part of these 

 were taken to different islands in the Sunda Straits, after which the 

 vessel made for the south-eastern angle of Krakatao, about the same 

 point where the excursionists of 1906 had landed. Messrs. Fransen 

 Herderschee, Holtappel and ) a c o b s o n debarked there 

 on May 4th. \Ve arranged that they should try to cut a path from 

 that point to the top whilst I myself should stay on the steamer in 

 order to visit consecutively Zwarte Hoek, Verlaten Eiland and Lang 

 Eiland. 1 should return on May 6th to the south-eastern angle of 

 Krakatao from where I should ascend the mountain along the path 

 made in the mean time by the 3 others. Little did we foresee the 

 difficulties that were in store for us! 



Shortly after noon on May 4th the Java dropped anchor off Zwarte 

 Hoek. When steaming past the steep wall formed by the rupture I 

 could observe that in many spots it bore living plants. From 3 till 5 

 in the afternoon 1 had the occasion to herborize on this beach, 

 explored already by so many botanists, and on the base of the 

 basaltic rocks. The following 52 species were found: 



