Historical Account of Testaceological Writers. 199 
ginal. For such of Linnaeus's terms as have justly been consi- 
dered objectionable, on account of indelicacy, this author has 
substituted others which, though not equally expressive, perhaps, 
are sufficiently intelligible. In the specific descriptions, the shell 
and the animal have been alike regarded; and the author seems to 
have steered a sort of middle course between the advocates for 
a system founded chiefly on the former, and those who have made 
the latter the chief subject of their attention. — Our remarks hi- 
therto have had respect only to the Introd. ad Hist. Nat. In the 
other work the merit consists in the figures, which are finely 
drawn, and contribute greatly to the general splendour of the 
volume. Plate 25 of Part I and 24 of Part II exhibit solely 
shells, correspondent to concise descriptions of seven remarkable 
species. 
The period of which we are treating was peculiarly productive 
of valuable publications in Testaceology. In 1778 
ell know] 
BARON BORN, 
so well known by his writings on mineralogy, presented to the 
public his description of the shells preserved in the museum of 
the Empress Queen at Vienna. This work was undertaken by 
the express command of Her Imperial Majesty, and forms a thick 
octavo volume, in Latin and German. The author has closely 
followed the Linnean method, and his descriptions exhibit the 
peculiar terseness and precision introduced into natural history 
by that great writer. His synonyms are copious and correct, and 
he does not appear to have fallen into that frequent error among 
naturalists — the undue multiplication of species. In this work 
the number of the latter is 6l6, and references are made to them 
by their German, Dutch, French, and English names, in four 
distinct indices. — Two years after the publication of the descrip- 
tive 
