PROSPECTUS. 
INTRIBUTIONS TO THE NATURAL HISTORY OR THR 
| UNITED. STATES, 
7 IN TEN VOLS, QUARTO, 
BY LOUIS AGASSIZ. 
be Published by Messrs. Little, Brown X Co. of Boston, United States. 
an: 
more than eight years, I have now been in this country, 
my attention chiefly to the study of those classes of the . 
ıal Kingdom which American naturalists have, thus far, not fully 
igated. The amount of materials I have already brought together 
great, that ihe time seems to me to have come when I should 
di with ihe publication of the more important results of these 
sations. Desirous of contributing my share to the rapid progress 
| scienees are making at present in this part of the world, I 
lo present my work io my fellow-laborers in this field in the 
t easily accessible to them. It has therefore appeared to me 
to bring it out in a series of independent volumes, rather 
caller my papers in the Transactions of our academies and 
societies. This plan will, moreover, leave me entirely free 
my contributions to science with such minute details, and 
an extent, as I shall deem necessary to the fullest illustration 
t entering into a detailed account of the contents of this 
nay be sufficient here to state, that it will contain the results 
ological investigations, embracing about sixty monographs, 
