150 Miscellaneous Intelligence. i 
already brought together is so great, that the time seems to me to have 
when I should proceed with the publication of the more import: — 
ant results of these investigations. Desirous of contributing my share 
to the rapid progress natural sciences are making at present in this part — 
of the world, | wish to present my work to my fellow-laborers in this 
field in the form most easily accessible to them. It has therefore ap: 
peared to me desirable to bring it out ina series of independent vol — 
umes. This plan will, moreover, leave me entirely free to present my 
contributions to science with such minute details, and to such an extent, 
as I shall deem necessary to the fullest illustration of my subject. 
Without entering into a detailed account of the contents of this work, 
it may be sufficient here to state, that it will contain the results of my 
embryological investigations, embracing about. sixty monographs, from 
all the classes of animals, especially selected among those best known 
~~as- characteristic of this continent ; also descriptions of a great number 
a and species, accompanied with accurate figures, and 
such anato Is as may contribute to illustrate their natural affin- 
ities and structure. " 
I shall not extend publications to classes already illustrated by — 
others, but limit to offering such additions to the Natural Hise — 
tory of the States I have” d as may constitute real contributions to 
fe) 
careful estimate of the materials I have now on hand, 1am — 
satisfied [ shall be able to include the most valuable part of my investiga- 
tions in ten quarto volumes ; each volume containing about } 
with at least twenty plates. I therefore now open a subscript f 
such a work, in ten volumes, quarto, in cloth binding, at the price @ 
imal kingdom, will furnish, I trust, a new foundation for a better appre 
ciation of the true affinities, and a more natural classification, of ani 
mals, I foresee the possibility, upon this basis, of determining, with — 
considerable precision, the relative rank of all the orders of every class 
of animals, and of furnishing a more reliable standard of coniparison é 
between the extinct types of past geological ages and the animals 
living upon earth. 
eo 4 
embryological researches, covering as they do, all the classes of the afr 4 
d i 
