TO 



THOMAS BELL, Esq., E.E.S. 



etc. etc. etc. 



President of the Linnean Society, 



Professor of Zoology in King's College, London, 



^^h Wioxk is g^bitat^b, 



AS A SMALL BUT SINCERE TEIBUTE OF ADMIRATION 



OF HIS ABILITIES, 



AND REGARD FOR HIS PRIVATE WORTH, 

 BY 



THE AUTHOE. 



