76 THE JOURNAL OF BOTANY 
stances that offered: these permitted a preliminary study of the 
flora of some neighbouring islands, as well as short visits to near 
points, as Sumatra and Java. On Krakatau the party found a 
state of things considerably in advance of that which Penzig had 
se 
speciosa ; fruit inflorescences of screw pines and see 
Carapa obovata, Cycas, and others adapted to transport by oceanic 
currents. Within this drift-zone was the Pes- @ fo ion, 
further inland the forest gave way to an association of ferns 
and tall grasses with Composites and terrestrial orchids (Arun- 
however, at present unknown, as the party found it impossible to 
reach the higher ravines and the peak of Rakata itself. 
flora of Krakatau now includes representatives of all 
divisions of the vegetable kingdom. The tot 
collected upon the three islands up to date is one hundred and 
; hese per cent.) a 
phanerogams, sixteen (eleven per cent.) pteridophyta, three (two 
per cent.) mosses, three fungi, twenty-two (sixteen per cent.) 
zygophyta and schizophyta and the myxomycete Physarum 
pecial sections are devoted to the direction of the winds and 
of the currents in the Straits of Sunda, as also to the composition 
of the soil—a matter obviously of great importance to the nutrition 
