140 SUPPLEMENT 
historians of antiquity, was the first writer who made use of 
the term mollusca. But under this name he comprehended 
but a portion of those animals which are at the present day 
classified under this type, giving that of ostracodermata (tes- 
taceous animals) to those which have a calcareous envelope, of 
greater or less hardness. 
Pliny, and in general all the ancient Latin naturalists, have 
employed the same denominations, which they have translated 
into their own language by the words mollia and testacea. 
#lian and the other Greek naturalists have followed Aristotle. 
Isidore de Seville, Wotton, Belon, Rondelet, have adopted 
the same denominations, as well as Gesner, Aldrovandus, and 
his abbreviator, Johnston. 
Ray, the precursor of Linnzus, appears to have been the 
first who, having applied the name of worms to all white- 
blooded animals, or the invertebrata of modern naturalists, 
(the insects and crustacea excepted) has employed the names 
of molluscous worms and testaceous worms, which correspond, 
however, to the divisions of Aristotle, though the term worms, 
or vermes, is certainly most strangely inapplicable. 
Adanson, perhaps the first who considered shells in a proper 
point of view, employed the term testacea (coguillages in 
French) in a classical manner; but under this name he merely 
comprised the species of mollusca which are invested with 
shells. Linnzus and his entire school have followed Ray. 
Pallas, after some very important observations on the subject, 
of which we shall speak hereafter, has shown for what animals 
the name of mollusca should be reserved. 
The Baron Cuvier, a name which cannot now be pro- 
nounced without the deepest regret of every lover of science, 
appears to have been the first who fully appreciated the obser- 
vations of Pallas, who carried them into operation, and united 
in one treatise all the animals indicated by the last-mentioned 
traveller and naturalist, comprehending them definitively under 
