XI. THE EXCURSIONS OF DR. DOCTERS VAN LEEUWEN 

 AND HIS COMPANIONS TO KRAKATAO IN 1919. 



(Dr. W. Docters van Leeuwen, De flora en de fauna van de eilanden der 



Krakatau-groep in 1919 (met V bijlayen) in Handelingen van het Eerste 



Nederlandsch-lndiscli Natuurwetenschappelijk Congres, gehouden 



te Batavia van 3-6 Oct. 1919 (1920), p. 35 seq. -The 



flora and the fauna of the islands of the Krakatao- 



group in 1919, in Ann. |ard. Bot. Buitenzorg 



XXXI (1921), p. 103 seq.). 



From April 24th to 28th 1919 Messrs. Docters van Leeu- 

 wen (Director of the Botanical Gardens, Buitenzorg), B a r t e 1 s 

 (well-known ornithologist, head-manager of the tea-plantation Pasir 

 Datar near Sukabumi (Java) and Sunier 'Head of the Labora- 

 tory for Marine Investigations at Batavia) made an excursion to 

 Krakatao. Mr. Docters van Leeuwen collected there a number 

 of plants which some time after his return were named by offi- 

 cials of the Buitenzorg Herbarium. He stayed 3 days on the south- 

 eastern side, made two trips into the interior and only one of these 

 to the higher parts, which is altogether insufficient for a thor- 

 ough exploration of the very dense vegetation of the numberless 

 ravines and ridges. He did not investigate the slopes on the 

 north-western side where T r e u b and P e n z i g had made their 

 excursions. 



At the First Dutch Indian Congress for Natural Science, held at 

 Batavia in 1919, Mr. Docters van Leeuwen delivered on Oct. 

 4th a popular lecture on Krakatao and its flora and fauna. Two days 

 afterwards the members of the congress paid under his botanical 

 guidance the fatal visit to Krakatao spoken of in the preceding chapter. 

 The lecture mentioned above, augmented with some appendixes, was 

 in 1920 published in the Transactions of the Congress, p. 35 seq. 

 In 1921 it was with some alterations published once more, now in 

 an English translation in Ann. Jard. Bot Buitenzorg XXXI (1921), p. 

 103 seq. In these publications not any mention was made either of 

 Krakatao having been inhabited by Mr. H a n d 1 himself during more 

 than 2 years and afterwards by some of his followers, nor of the 

 jungle-fire caused by a member of the congress. In the programme 

 of the excursion to Krakatao 1 ) it is even expressly stated that the 



l ) Handelingen Eerste Nederlandsch-Indisch Natuurwetenschappelijk Congres ( 1920), 

 pp. (32), (33). 



