Edam Island 9 



with C. A. Backer 1 , the author of a comprehensive "Flora of Batavia" 

 which is now in the press, to Professor Treub to organise another 

 expedition for the investigation of the Krakatau flora. As the 

 result of his kind co-operation the authorities placed at our disposal 

 a small coasting- steamer which was then on the point of visiting 

 certain places on the coast of the Sunda Strait to relieve the lighthouse 

 keepers. The excursion was to last four days and the departure was 

 fixed for April 24th. Unfortunately Professor Treub was prevented 

 by illness from accompanying us, but we were joined by two botanists 

 who happened to be studying in the Buitenzorg botanic garden, 

 Dr A. A. Pulle from Holland and Prof. D. H. Campbell of California. 



The plants collected by C. A. Backer and Dr A. A. Pulle in the course 

 of our Krakatau excursion, on the island and at different localities 

 on the coasts, were determined by the former, who was kind enough to 

 undertake the revision and to some extent the identification of the 

 vascular plants collected by myself. The list of phanerogams and 

 vascular cryptogams which we collected, communicated to me by 

 C. A. Backer, will appear either in Verslag van 's Lands Plantentuin 

 te Buitenzorg or in the Mededeelingen uit 's Lands Plantentuin te 

 Buitenzorg. As a matter of convenience I have arranged the plants 

 in the following lists according to families, including the names of 

 some species of widely distributed and well known plants of which, 

 though no specimens were collected, records were made in my notes 

 written on the spot. 



Since the appearance of the German edition of this account 

 Dr Pulle 2 and Prof. Campbell 3 have published some of the results 

 of their own observations, the former in a detailed abstract of this 

 work and the latter in a paper on the distribution of liverworts. 



1. Vegetation and flora of the coral island Edam. 



In beautiful weather on the morning of April 24th, 1906, the "Snip" 

 (Snipe) left the harbour of Tandjong Priok to steer a western course 

 among the numerous small coral islands scattered along the north- 

 west coast of Java. Our first objective was the island of Edam, barely 

 12 kilometres distant, which like Onrust, Leyden and other small 

 islands outside the harbour of Batavia, was formerly inhabited. To- 

 day the European keepers of the large lighthouse and their Javan 



1 Backer, C. A. Flora van Batavia. Deel I. Dicotylcdoncs Dlalypetalae. 

 Batavia, 1907. 



2 Bulle, A. A. " De nieuwe flora van Krakatau." Ovcrgedrukt uit De indische 

 Merkur, April 21, 1908. 



3 Campbell, D. H. "On the Distribution of the Hepaticae and its significance." 

 New Phytoloyist, Vol. vi. p. 203, 1907. 



