




The accompanying Figures are entirely from the Author's 
dissections, who thinking that they may be of use or interest 
to naturalists and physiologists—many of them being from 
rare or little known animals, and the rest embracing inci- 
dents of structure, more or less notable—has taken the 
trouble, or rather given himself the pleasure of rendering 
them permanent, and also of procuring a few duplicates, by 
means of etching—an art, however, in which he confesses 
himself an untaught and not over successful tyro. 
Stoke-upon- Trent, Staffordshire, 
July 19th., 1860. 



