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swamp was again exposed to view, in which the remains of the 
old tussocks was a conspicuous feature. Fig. 29 is reproduced 
from a recent photograph, and it may be seen that these tussocks 
still retain their original shapes, although they are more or less 
G. 29. View of upper lake showing tussocks which have been submerged for 
FI 
four years, 
worn and are partly buried in the surrounding mud and silt which 
accumulated during the period of submersion. In the spaces 
etween the tussocks a variety of material has found lodgment, 
among which, branches, twigs, and leaves from the trees in the 
vicinity, are abundantly represented, and these, together with the 
silt, now form a distinct and characteristic layer over the surface 
of the old swamp. 
Since.the last photograph was taken the swamp has again been 
