C 283 ] 
But herein he takes this matter wrong: he has 
confidered, in all his obfervations, the heads of thofe 
parts of the polype, in which are the mouths, arms, 
or tentacula, which appear coming out of the cups, 
denticles, and at the ends of the tubes of the coral- 
lines, as fo many whole and intire animals, without 
ever obferving, that the body of the animal is con* 
tained in the tubular part of the root, item, and 
branches ; and that thefe differ from One another 
widely both in fize and fhape, as he may plainly fee 
in the two corallines he has inflanced : for the more 
exadt drawings of which, I fhall refer him, viz. for 
the fetaceous or briftly coralline, to my Plate, N°. 38. 
the natural fize of which is at fig. 4. and the magni- 
fied one at fig. D : this he will obferve to have a 
fmall flem, and its branches difpofed in a pinnated 
form : and for the lobfler’s-horn coralline, I fhall 
refer him to Tab. xxii. of Vol. xlviii. of the Philo- 
fophical Tran factions ; where, at N°. 3. the natural 
fize is exprbffed, and at C the upper part of this 
coralline is drawn in proportion to the briflly coral- 
line from the fame magnifying glafs ; which (hews 
the flem to be much larger, and furrounded by its 
branches growing in whorles at equal diflances, not 
unlike the equifetum, or horfe-tail plant ; and yet the 
heads of this animal nearly refemble the other, only 
a little larger. Further, his cOmparifoil to bees and 
wafps, and their cells, is not conclufive : for thefe 
ramified, hollow, and denticulated bodies, called co- 
rallines, which we fo frequently find dead on our 
fhores, are properly fkins of certain marine polypes, 
and not nefls, as thofe conflrubled by thefe little 
winged animals are. And yet we find as great a 
Oo 2 regularity 
