THE AMERICAN CONCHOLOGY. 



The object of this work, is lo fix the species of our Molluscous animals, by- 

 accurate delineations in their appropriate colours, so that they may be readily 

 recognized even by those who have not extensive cabinets for comparison. 



Although it is intended to elucidate the Molluscous animals of aU I\orth A- 

 racrica, yet it is proposed to introduce those of the United States chiefly, into 

 the iirst part of the work, so that those subscribers who may wish to limit their 

 (inquiries or expenditure to the shells of this Union, may be accoaimodated. 



The price to subscribers will be one dollar a.nd Jifty cents each number, with 

 the right to withdraw their names on the publication of the fourth number, 

 aiter Having paid for them. 



The publishers, however, pledge themselves to their subscribers, to reduce the 

 price of the future nuinbers to one dollar, that,may be published after the 

 aubscription list shall justify a reasonable hope of a rei.mbursement of t tie actual 

 expenditure. It is intended also to add to the work an introduction to the sci- 

 ence of Conchology, showing the proper succession of the orders, families and 

 •j-enera, together with an explanation of the technical terras used in describing. 

 The subscribers and all those who wish to encourage this undertaking, 

 are therefore solicited to assist in enabling us to accomplish these objects, 

 by making the work and the proposals known, and by communicating the 

 names of subscribers to the 'office of the Disseminator, New-Harmony, Indiana.' 

 ric'veral public institutions and State libraries have already subscribed and the 

 patronage of all is respectfully requested. 



The publishers coniidenily hope, that their endeavours to put the work with- 

 ;uthe reach of the linauces, of almost all those whose enjoyments are augment- 

 (34 by an examination of the works of nature, will meet with such encourage- 

 lueat, as shall enable them to produce at least one number, each three montba. 



ERRATA. 



When describing the Paludina vivipara of the first No., I omitted to men- 

 tion that it sometimes varies to a brownish colour, with fuscoua banda ; and 

 :lua variety is represented on our plate 10. 



