Hi; ADVERTISEMENTS. 
Part |. to Ill. now ready. Part IV. in the Press. 
SUBSCRIPTIONS ARE INVITED 
FOR 
& A MONOGRAPH @& 
OF THE 
Land & Freshwater Mollusca 
OH MHE BRITISH ISLES 
by 
Jo W. TAY LOR, CAR 
Membre Honoraire de la Société Malacologique de France, 
ex-President of the Conchological Society of Great Britain and Ireland, 
late Editor of ‘* The Journal of Conchology,” 
ete:, ete. 
Vol. I. is devoted to Anatomy, Physiology, Uses, and Distribution, &c., the first 
part dealing with the DrFriniITiION oF CoNCHOLOGY, HistToRY, CLASSIFICATION, 
NoMENCLATURE, SYNONYMY, SHELL, SPECIES, VARIETIES, &c., and is illustrated with — 
numerous figures in the text and a plate in colours. 
The second part concludes the consideration of the variations and monstrosities 
to which the shell is subject, treating upon Sinistrorsity, Scalariformity, Hyperstrophy, 
Heterostrophy, etc., etc., and the Auxiliary Appendages of the shell, and is richly illus- 
trated by figures in the text and a plate in colours. 
The third part chiefly contains a detailed and fully illustrated account of a typical 
Gastropod and Pelecypod. 
The fourth part, which will follow as quickly as practicable, treats upon the 
Morphology, Anatomy, and Evolution of the animal inhabitant, and the various organs. 
Subscription, 5 - per part; post free, 5/3. 
Subscribers’ Names to be sent, with Subscription, addressed to the Author, 
c/o Taylor Brothers, Publishers, Leeds. 
A full list of Subseribers will be printed at the completion of the work. 
