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the infertion of the fpines 5 Thefe fpines arc 
combined of many fine fpiculae, which unite 
and form one fpine. When thefe fpines open 
at top, each forms a ftar of fmall fpicula?, 
which nature feems to have pointed out as a 
protection for the mouths or fuckers under- 
neath, which have no other covering to defend 
them, whereas in the Red-Sea-Pen there is a 
circle of fpiculas to each fucker, . 
LIV. a : 
