VII. THE TRIP OF GOLENKIN AND VALETON TO 

 KRAKATAO IN 1905. 



On March 1 st 1905 a trip to Krakatao was made by the Russian 

 savant Golenkin, mainly for the purpose of collecting marine algae. 

 Dr. T h. Valeton, the author of the systematic part of the ,,Bijdra- 

 gen tot de kennis der Boomsoorten van Java ')" took merely as a 

 tourist part in this trip which was never intended to be a botanical 

 exploration of the island. On this occasion he collected some plants with 

 the assistance of Arsin (t 1913), a native functionary of the Buitenzorg 

 Herbarium. Vale ton has never published anything on the botanical 

 results of his trip, but kindly sent me by letter some information 

 about a list 2 ), made by Arsin of the plants collected in 1905, 

 to which list Dr. V a I e t o n added another one recording the plants 

 merely observed but not collected by him. The above mentioned list 

 of Arsin was inserted by Docters van Leeuwen (sub No. 3) 

 in his lists of plants found on the islands of the Krakatao group '). 



From the letter of V a 1 e t o n it appears that he landed first on 

 the north-west side of the island near Zwarte Hoek. After having 

 investigated the flora of the beach he went some way up the steep 

 basaltic slopes where he had the misfortune to luxate an arm so that 

 he had to give up further ascent. The locality investigated bore a 

 dense vegetation of glagah (Saccharurn spontaneum L. ''). Afterwards 

 the visitors landed on the east side of the island. On this side, where the 

 parts of the interior adjacent to the beach are much less steep than 

 at Zwarte Hoek, the explorers penetrated some little way into the 

 jungle, but their harvest was poor- Some of the collected plants were 

 found back by me in the Buitenzorg Herbarium. Part of them bore the 

 addition Krakatao ilir, another part Krakatao oedik, which additions 

 were made by Arsin. Valeton kindly informed me about the meaning 



1 ) This most excellent and useful work was written in collaboration with Dr. S. H. 

 Koorders (t 1919) who had collected the materials but took no part in the system- 

 atical elaboration. He added the small-type details about distribution, leaf-shed- 

 ding, velocity of growth, reproduction, cultivation, properties and use of the wood, 

 vernacular names a. s. o. The systematic part of volume 12 was written by Dr. ]. |. 

 Smith, that of volume 13 partly by Dr. Valeton, partly by Dr. ). I. Smith. 



2 ) Dr. Valeton kindly gave me this list which is now in my possession. 



3 ) Handelingen Eerste Nederlandsch-lndisch Natuurwetenschappelijk Congres, 

 Weltevreden (1920) pp. 54 seq. Ann. |ard. Bot. Buitenzorg XXXI (1921) pp. 126 seq. 



4 ) See pp. 100, seq. 



