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LETTER IV. 
CLASSIFICATION NOMENCLATURE TUBIPORITE APPROACHING 
TO TUBIPORA MUSICA TUBIPORA STRUES IMBEDDED IN 
MARBLE MR. HATCHETt’s EXPERIMENTS ANIMAL MEM- 
BRANE DETECTED IN THE MARBLE FORMED BY THIS CORAL. 
JThe classification of zoophytes by the illustrious Linnaeus, is that 
which will be adopted in the following pages. Mons. Cuvier, whose 
indefatigable exertions for promoting the advancement of comparative 
anatomy and oryctology, demand the gratitude of every lover of science, 
has proposed a different arrangement of animal bodies ; which does not, 
however, seem necessary to be here adopted in preference to that of 
Linnaeus. Indeed, without dwelling on the admission of holothuria 
and siphunculus among the zoophytes, the disposal of echinus and 
asteria among those animals which derive their names from their 
resembling plants in their figure, appears to render the classification of 
Cuvier objectionable. By the adoption of the arrangement of Linnaeus, 
that confusion also will be avoided, which might arise from any deviation 
from that general language of natural historians, which has been derived 
from that particular mode of classification. 
It is also necessary to make a few remarks respecting the vocabulary 
of oryctology. This science, it must be acknowledged, is too little 
advanced in this country, to have obtained a full and correct nomencla- 
ture. The restricted knowledge we possess, respecting many fossils, is 
one considerable cause of the little progress which has been made in 
this respect : added to which, is the circumstance of the English writers 
on these subjects having generally employed, unchanged, the several 
terms which have served to designate these substances in the Latin 
tongue. 
