PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
—_—_— or 
AMERICAN ASSOCIATION FOR THE erat OF CE. — 
NaTuraL History SECTION. Burlington, Vt., August 21-26, 1867. 
“On the Zodlogical Affinities of the Tabulate Corals.” By Professor 
A. E. Verrill. Coral-like forms were stated to be formed by various 
kinds of animals, and a by some plants. Thus we have Protozoén 
corals (Hozoén, Polytrema, ston ny sponges, etc.); Pa EP corals 
(Bryozoa); ee een Satkaat ee: Poly! Is (G Psa 
ugh there are still some doubt groups of corals, peg ure 
oe ice forms is now well known. The most important do oe 
groups are at present the ÜJüthöpäyied corals (Rugosa Edw.), and 
the Tabulate corals. N early all authors ene both these great groups 
among the true Polyps, but a few advocate the Molluscan affinities of 
some of the Cyathophylloids, and hain ai of the Tabulata ( Che- 
tetes, etc.), the Bo being compared with Hippurites, etc., and the 
latter with Bryoz 
ofessor pican has, however, referred both these groups to the 
Hydroids, placing them, therefore, in the class of Acale ephs. As both 
are abundant in the Silurian rocks, this generalization catrios the ap- 
assa ails humerous spec cik 
Professor Agassiz examined the living animals of Millepora several 
other Hydroids. m these observations, upon a single genus, he has 
concluded that < pros Tabulate corals, living and fossil, are also 
dro: 
(618) 
