Vll. 
general rules may obtain as regards the whole earth,each 
district may itself also furnish rules not applicable beyond 
it ; that in short there are localities to the phenomena of 
the deposition and characters of strata, as I shall illustrate 
further under the proper head. 
It is necessary to remark here relatively to the 
MAPS which illustrate the zoology of the district, that 
they are assumed to have merely a limited utility. Unlike 
the tribes of the vegetable kingdom, nearly the whole of 
animals enjoy free locomotive powers, and a large 
proportion moreover do not limit themselves to one 
description of abode, but roam at will over a variety of 
situations. Again it must be confessed that the number 
of naturalists is at present so few, that in the best cases 
we can boast only of partial zoological knowledge of 
localities; and again with respect to the notice of rare 
animals, or visitors, the situations in which they have 
been observed may have been only casual and momentary. 
Accordingly, this novel kind of map will necessarily be 
of less use than those employed in the illustration of 
botanical geography. But, though the present maps will 
be of contracted service in gaining information on the 
laws and rules of animal distribution, they will serve to 
display at one view the main features in the catalogue of 
which we boast, and the principal residences of many 
species. With respect indeed to many kinds, somewhat 
of risk has been incurred in the situations assigned to 
them from the rarity of their occurrence, or the slight 
notice bestowed upon their range; but as above intimated. 
