t 650 ] 
or in fize, from any of the Polypi that were in the 
clufter it is now parted from, or from any of thofe 
others that will be formed in the clufter, it is by 
its own future divifion and fubdivifions to produce. 
But how is it with the new fpecies we are now con- 
fidering? Does every 5 Volypus among thefe, as foon 
as detached from the clufter, fix it ,felf alfo elfe- 
where, and there give origin to a new clufter > Or 
are they only the bulbous bodies above mentioned, 
that have this prerogative, of being capable k to pro- 
duce a new colony > 
Thefe queftions and doubts greatly raifed my 
curiofity, from the time I firft began to fee the pro- 
grefs of a clufter of ‘Polypi, formed by the divifion 
and the fubdivifions of one of thefe round bulbous 
fubftances : and that which now follows, is what I 
have been able to colled from the various obferva- 
tions, and from the feveral experiments, which I 
made, whilft 1 was endeavouring to give my felf 
fome fatisfadion with relation to the fame doubts 
and queftions. 
To know, whether the Polypi which detach them- 
felves from thefe clufters do each of thdn contain 
in themfelves the principles of other new clufters, 
I took all the precautions I had taken in other cafes, 
and fu'ch as 1 had found eafily to fucceed with the 
cluttering Polypi of other forts. But all was to no 
effed, and I could never find that any thing was 
produced by th tic Polypi fo detached, i have there- 
fore all reafon to prefume, that theie Polypi do not 
contain the principles of new clufters, and it feems 
to me the moft probable, that they all perifn without 
ever producing any thing whatfoeyer. 
When 
