THE NAUTILUS. 



BACK VOLUMES OF THE NAUTILUS. 



Vol. IV. May, 1890 to April, 1891, . $1.00 

 Vol. V. May, 1891 to April, 1892, . 1.00 

 Vol. VI. May, 1892 to April, 1893, . 1.00 

 Vol. VII. May, 1893 to April, 1894, . 1.00 

 Vol. VIII. May, 1894 to April, 1895. . 1.00 

 Vol. IX. May, 1895 to April, 1896. . 1.00 

 Of Vols. I and II, which were known as the " Conchologisffs Ex- 



chfiii(/e," and Vol. Ill of THE NAUTILUS, we can furnish odd 



numbers only. 



Extras of August and September number, (1895) containing an 



Index to the Conchologists' 1 Exchange for binding with the latter, 



will be furnished at 10 cents per cop}'. 



Advertisements will be inserted at the rate of $1.OO 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. In order to have the paper out promptly, 

 " copy " is put in the printer's hands on the 2Oth of each 

 month. 



Address, C. W. JOHNSON, 



WAGNER FREE INSTITUTE, 



Philadelphia, Pa. 



YXCKANGEST 



The following space is to be given to exchanges. Notices not 

 exceeding three lines, will be free to subscribers as long as our 

 limit of space will allow. 



WANTED: North American Land and Marine Shells in ex- 

 change for European Shells, mostly land and fresh water. 



COL. PARRY, 18 Hyde Gardens, Eastbourne, England. 



OFFERED: Large and valuable collection of marine, land and 

 fresh water shells, in exchange for exotic land species. Send lists. 

 Miss LINTER, Arragon Close, Twickenham, Middlesex, Eng. 



PUGET SOUND Marine Shells to exchange for land, fresh water 

 or marine. Send lists. 



YOUNG NATURALISTS ASSOCIATION, Seattle, Washington. 



WANTED: A specimen of H,/i.r Uonrlli Newc. Will give in 

 return a h'ue new species of Veroni<-rll from the Congo, or Janella 



. 

 C. F. ANCEY, administrateur adjoint, Dra-el Mizau, Algeria. 



OFFERED: Unto Fri<-i-*i>ni Wright, and other Louisiana Shells, 

 for Uniouidse. L. S. FRIERSON, Friersou Mill, La. 



FOR EXCHANGE: A large number of minerals, fossils and 

 shells. For named marine and fresh-water shells. 



H. B. DERR, 6561 Michigan Ave., Chicago, 111. 



FOR EXCHANGE: Pacific Coast shells, for other marine or land 

 shells. M \IIIA DRAKE, 750 E. St., Tacoma, Wash. 



