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becomes more shallow, sometimes the bottom is laid quite dry, 

 and then it is often covered by salt-weeds especially Batis. In one 

 of these channels with shallow water, growing on mangrove-roots 

 and fallen branches, Batophoi-a 0rstedi J. Ag., which 0rsted found 

 here during his stay on the islands, occurred ^ in great numbers. 

 On this part of the coast a considerable increase of land is 

 evidently taking place, as all material brought in by the sea or 

 from land by watercourses is deposited between the roots of the 



Fig. 16. A Rhizophora-ivQe broken by the hurricane. The south-western end 



of Krausse's lagoon. (F. B. phot.) 



mangrove in the stagnant water. What greatly adds to the deposit, 

 especially of the finer mire, is the dense luxuriant growth of richly 

 branched algae which cover the roots of the mangrove; if one 

 touches such a root with its alga vegetation the water directly 

 becomes turbid. 



This part of the mangrove forest had evidently survived the 

 hurricane, without suffering any greater harm yet unmistakable traces 

 of it were seen in many places, especially upturned trees of which 

 fig. 16 shows one. The trunk was quite broken but borne up 

 by numerous aerial roots and was now growing vigorously. On 



