Bauhaus-Universität Weimar

Titel:
The Cyclopaedia of Anatomy and Physiology, vol. 4: Pla [corr.: Ple] - Wri
Person:
Todd, Robert Bentley
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit29465/45/
POLYPIFERA. 
35 
hering to it; sometimes they are fixed to 
other madrepores by an elongated pedicle, 
and occasionally, as we learn from a recent 
author, grow from the substance of the parent 
zoophyte. His account is as follows : — 
“ The specimens of Fungia which I have 
seen generally lie in hollows of reefs, where 
they are in some degree protected from the 
more violent agitation of the sea by the sur¬ 
rounding portions of branching coral which 
enclose the hollows, and at the same time 
allow sea-water free access through their in¬ 
terstices. It appears that although the older 
and larger individuals are quite unattached 
and present no mark of former attachment, 
yet that in the young state they are fixed 
sometimes to rocks, and frequently to the 
dead remains of their own species ; in this 
Fig. 39. 
Fungia actiniformis. (After Quoy et Guimard.} 
state they grow upon a footstalk, and gene¬ 
rally remain attached till they acquire the 
size of nearly an inch in diameter, when they 
separate at the top of the peduncle.” 
“At this time the coral, when divested of 
the fleshy part, shows a circular opening be¬ 
neath, through which the radiating, plates of 
the upper surface are visible. In a short 
time a deposit of coral matter takes place, 
which cicatrises the opening, the marks of 
which, however, can be traced for a consider¬ 
able time ; at length the increase of this de¬ 
posit, which continues with the growth of the 
animal, entirely obliterates all appearance of 
it. It will not appear surprising that this cir¬ 
cumstance should hitherto have been un¬ 
noticed, when it is recollected that it has 
very rarely occurred to naturalists to visit the 
places of their growth, and that to general 
collectors the smaller specimens would appear 
hardly worth the trouble of preserving and 
bringing home.” 
“ The sheltered situation in which the Fungiæ 
are found are particularly well adapted to 
their nature, as they would be liable to injury 
if they were exposed to the full force of a 
stormy sea ; and the circumstance of their 
being attached in the young state is a beau¬ 
tiful provision of nature for their preservation 
at that period, as from their light weight, 
when first developed, they would, il unat¬ 
tached, be exposed to great injury, even by a 
slight agitation of the water. I have also to 
remark upon this fact, that the Fungiæ, while 
attached, agree in every respect with Lamarck’s 
genus Caryophyllia, more especially in their
        

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