THE NAUTILUS. 



Advertisements •will be inserted at the rate of $1.00 per 

 inch for each insertion in advance. Smaller space in propor- 

 tion. A discount of 25 per cent, will be made on insertions of 

 six months or longer. 



SPECIMEN TRAYS 



FOR €ABIXETS. 



Tp<3^q TnnP^ ^ Tn PAPER BOZ MAKERS, 



je§§e joiie§ oc bo., g^^ commerce street, 



PHILADELPHIA. 



CONCHOLOCy-GEOLOGy-ZOOLOGy, ETC., ETC. 



Robert F. Damon, Weymouth, has the largest variety of 

 Natural History Specimens to be seen in England. 



Abridged Catalogue on application. 



Foreign collectors who are willing to exchange or sell Rare 

 and New species of Shells will kindly communicate with 

 Mr. Damon. 



A beginner wishes to obtain shells for his collection — Land and 

 Marine Univalves— address, 



"SHELLS," care of Editor Nautilus, 



Acad. Nat. Sciences, Philadelphia. 



