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farther on, at the upperside. If larvae had given origin to these 
young corals, they would not have been disposed so regularly in 
one row along the border. 
Fig. 5. Fungia fungites. The left specimen seen from above, 
the right one from below. Budding at the border of 
individuals almost entirely overgrown by parasites. 
3/3 nat. size. 
3. Also at the underside some buds are noticeable, rather removed 
from the border. When a Fungia is attacked by algae, the tissue 
of the underside keeps intact longer than any other part, because 
the weeds have to force their way through the disc in order to 
attack it also. 
This is why the tissue at the upperside may be entirely destroyed 
by algae, while rests of soft parts may still exist at the underside, 
which may induce the growth of buds. 
These buds do not develop so well as those at the border, their 
extremity is not broadened into a disc, which is probably due to 
the absence of light. The development of these very buds goes 
against the hypothesis that they should have originated from larvae 
which had attached themselves here. The old Fungia lies flat at 
the bottom, even the borders are still covered with sediment *). 
Owing to this the underside is isolated from the environment, so 
that no larvae can settle there, putting aside the very unpropitious 
position occupied by these buds with respect to the light. 
1, A living Fungia continually removes the sediment that falls on the 
upperside, by enclosing it in a layer of mucus, which is removed from the 
centre onward over the border. 
