To Proprietors of Land and others in Illinois and other 
Western States. 
A professional gentleman, travelling to the West, during the en- 
suing autumn and winter, and well acquainted with Geology, will be 
willing to undertake a geological investigation, and make a respon- 
sible report of any interest connected with the mineral kingdom, 
in any of the States contiguous to the Ohio river or the great lakes. 
His address and full information may be obtained from the editors 
‘of this Journal. 
New Haven, July 12, 1838, 
