C 652 ] 
under fide, the pedicles continually lengthen themfeives 
by degrees for about 24 hours, and during the lame 
time the bulbs alfo change their figure, and become 
nearly oval. There are in a clufter but few of thefe 
bulbs, in comparifon of the great number of Polypi 
that are upon the fame ; neither do thefe bulbs all 
come out at the fame time. 
It is now eafie to judge of the remarkable differ- 
ence there is between the two forts of cluttering 
Polypi that are deferibed in this paper. 
The clutters of the firft fpecies of Polypi , and 
thofe of feveral others which I have alfo obferved, 
do all come from Polypi detached from the clus- 
ters alteady formed. But the clutters of the Polypi 
of the Second fpecies here deferibed, do not arife 
from Polypi detached from other clutters, but from 
round bodies or bulbs, larger than thofe Polypi y 
and of a form very different from them. 
Thefe bulbous bodies are not formed like the 
Polypi , by the divifton of others like themfeives, 
but they lpring from the branches of the clufter, as 
, the flowers and the fruits of a tree fpring from the 
branches of the fame. 
In diverfe other fpecies of Polypi , there are con- 
fiderable intervals of time between their divifions. 
In the bulbous kind, if I may call it fo, the firfl 
divifions are confecutive and follow hard upon each 
other, nor is there any interval of rime between 
them, until the bodies which are to divide have al- 
ready acquired the Shapes of Polypi . 
The clutters of the bulbous fort have an origin 
entirely different from thofe of the other forts of 
cluttering Polypi . Yet do thefe clutters inlarge, and 
the 
