FLORA OF NORTH-WESTERN MEXICO, 
201 
The following pages will contain the results of H.M.S. Herald's expexlition to Mexico, 
as well as those obtained by H.M.SS. Blossom and Sulphur, added to which arc dc- crip t ions, 
with remarks, of part of the collection formed by Mr. Potts in Chihuahua, particularly in 
,the vicinity of the capital of that State. It is to be regn^tted that the i'xpeditions of the 
'Blossom' and 'Sulphur' were so unproductive in general remarks respecting the nature of 
the country and its vegetation, and that my own journeys were so limited, and tuuk place 
in such an unfavourable season of the year; because the materials thus brought together 
are not sufficient to give such general descriptions of the Flora of North-western Mexico 
as have been furnished in the "Introduction" to my Flora of Western Eskiinaiix-huid and 
of the Isthmus of Panama. 
