276 SUPPLEMENT 
forming the passage to the conchs or bivalves, but erroneously. 
We should also observe, that he appears to have been the first 
who arranged the oscabriones with the patella, the section of 
his multivalve conchs containing only the pholades and 
teredo. Linnzus, who in the first edition of his Systema Na- 
ture had not proved that he was really aw fait at this part of 
the natural sciences, showed in that which followed the publi- 
cation of Adanson’s work, that the same vrinciples might be 
applied to it, which he had so happily imagined and success- 
fully employed in botany. He nevertheless created no very new 
characteristic distinction in the primary sections, nor even in 
the secondary, since he divides the teste into multivalves, with 
which he commences, and in which he ranges the oscabriones 
into bivalves and into univalves, which he subsequently divides 
into turbinated and non-turbinated. But he has introduced in 
the exposition of the characters, in their circumscription, and 
in the creation of conchological language, that precision and 
that clearness, which must ever cause him to be regarded as 
the model and the master of all systematic naturalists. 
Pretty nearly about this period, viz. in 1769, began to be 
published the great work of Martini, continued and terminated 
by Chemnitz in 1788. As we must regard it rather as a col- 
lection of figures of shells, than a true system of conchology, 
we shall content ourselves with mentioning that the order 
which has been adopted by the last, partakes at once of that 
of Gesner and Lister, the primary divisions being still derived 
from the habitation of the animals. In other points he follows 
Linneus closely; and it may be said that his sections are 
tolerably simple, and tolerably consonant with natural rela- 
tions. 
In 1776, Da Costa published, in our own language, some 
true elements of conchology, in a work entitled “ Elements of 
Conchology.” His system evidently differs but little from 
that of Linnzus; nevertheless, he appears to have insisted 
