ADVERTISEMENT AND PROSPECTUS. 
A FEW months ago, when the Publisher first announced the appear- 
ance of the Conchology of Great Britain and Ireland, he hoped to have 
been enabled to publish a System of the Conchology of these Islands ; 
but he has found it necessary to abandon this intention, and to confine 
the Letter-press merely to the Names and Synonyms of the Shells, and 
the Names of the Authoi's and their Works, by whom they have been 
described. The Names and Works of three of the most celebrated Au- 
thors are selected, with particular references to the volume and page 
where the descriptions occur. The Publisher can assure those who 
encourage the Work, that one Number will appear on the First of 
every Month, commencing 1st March, and continviing without inter- 
ruption till the whole Twelve Numbers are completed. 
PROSPECTUS. 
It is proposed to publish coloured Engravings of all the Shells 
known to be natives of Great Britain and Ireland. 
I. — Each Number will contain Four Plates, with the names and synonyms of 
the Shells, and the names of the Authors and their works where they are to 
be found described. 
II. — The Plates will be printed on Elephant Quarto drawing"paper of the first 
quality, and the Figures coloured in the most careful manner from nature. 
III. — The Work will consist of Twelve Numbers ; it will be published Monthly, 
commencing 1st March 1827; and will continue without interruption till the 
whole is completed. 
IV — The price of each Number to Subscribers will be 10s. 6d. 
EDINBURGH : 
Published by W. H. Lizaus, Engraver ; D. Lizars, Bookseller, Edinburgh ; 
and S. HiGHLEY, Bookseller, London. 
