SPONGIA. 
109 
several type CU ^ ground, trusting to make the special study of the 
of Polype^ | a bave t° describe more interesting. The group 
the Alcyonidl ’tL' 7 ms f V ° S . mt ° maiiy classes > namely, the Sponges, 
will be our i. -i , ° an iarm > ^e Discophora, and Ctenophora. It 
each of the ! , “ Succea3ion habits and characters of 
** to the^mS rS. SUCh ^ t0 “ t0 
Spongia. 
tunes of the highest a^Tidtv^ 0 lms 1)een known from 
who occupied themselves with T °i e ’ PliQ y, and all other writers 
agreed in according to it a * "yf ^f 017 iu ancient times, are 
thct that the sponge w - J the curious 
to the rocks on which it is rooted^ V 4 t0 Seize its and clings 
to detach it. PUny, D^oS Lndl WWdd ^ the -ale 
the idea that sponges were can ible T commentators, even formed 
to their native rock by special for, e ° , mg ’ tha t they adhered 
hand which tried to ’ ^ sWk *°* the 
4 4 t*?* 61 fte merry 
* physician »d iS'of mT,?' ***»*' wl “' ™ 
existence of sensibility in sponges nfo^ &t &st the 
productions belonged to the ve4mn ° ri gmated the idea that these 
Gaspard Bauhin ,Eey ^ * ld T an idea which Tournefort, 
‘‘System* Katur^,’> } 4 PP orLd bv r nS ’ ? ? ^ ^ of Lia 
Afterwards, influenced by the ° f ^ names - 
some other observers, Linnmus withdrew^ 0 ” 8 ° f Tremble y and 
table world. He satisfied himself h s W TT ^ ^ Vege ' 
-nch resembled sponges in the naW ( ! ’ that Certam l^ers 
»■> the other hand, tie 1m Jl “ , * h “ r P™“hym., and that. 
SUC . h as co 'ild be maintained. NeurembeTT 8 ^ , pl,mts was 11 ot 
maintain the animal „t Sn'n4 L 1“ T '™1% 
«pon 0 es, and their views are adopted 
