. \ I. it- -I â 1 .: M - , - : V ;; <'i' krakatau, photographed hy PROFESSOR NINETEEN YEARS AFTER THE ERUPTION. By hind permission of the Cambridge University Press. island : he found a few pioneers already established on the beach and others in the interior of the island, both ferns and flowering plants. The plants near the sea had germinated from seeds washed up on the beach and carried from neighbouring islands by currents, while those farther inland possessed fruits or seeds adapted to dispersal by wind. Dr. Treub made the interesting discovery that the inhospitable surface of
. \ I. it- -I â 1 .: M - , - : V ;; <'i' krakatau, photographed hy PROFESSOR NINETEEN YEARS AFTER THE ERUPTION. By hind permission of the Cambridge University Press. island : he found a few pioneers already established on the beach and others in the interior of the island, both ferns and flowering plants. The plants near the sea had germinated from seeds washed up on the beach and carried from neighbouring islands by currents, while those farther inland possessed fruits or seeds adapted to dispersal by wind. Dr. Treub made the interesting discovery that the inhospitable surface of the volcanic dust and pumice had first been occupied by members of the Blue-green Algse, small, lowly organised plants able to live under conditions which are impossible for the higher forms of life, and readily carried through the air in the form of minute, dust-like spores. These simple organisms covered the surface of the ground near the shore and in the ravines on the by Professor Ernst, of Zurich, and translated into English. Professor Ernst wrote : "As we approached the east coast of Krakatau we noticed with growing amazement the remarkable progress made b}' the vegetation. Almost the whole south side, from the beach to the summit and to the edge of the steep promontory, is covered with green. On the south- east coast, where we first thought of landing, a belt of forest runs parallel to the shore, in which we could recognise from a distance numerous grey-green Casuar- ina ' trees. Farther to the south rose the dark green 1 Casuarina is a genus of trees represented by several species in Australia, Polynesia, and other regions in the Southern Hemisphere ; it is characterised by green, pendulous, whip-like branches, and in some places is known as the She-Oak.
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