INSTRUCTIONS. 



The following are instructions received, on different occasions, from Dr. 

 D. D. Owen, Principal Geologist of the State of Arkansas: 



Instructions, dated Ociobei-, 1857. 



<• After separating from corps No. 1, you will proceed by the most 

 feasible route between Cache and Black rivers, through the north and 

 north-west part of Greene, south-east part of Randolph, the eastern part 

 of Lawrence, and the north part of Jackson county, and make a general 

 geological reconnoissance of those portions of the State of Arkansas. 



You will keep your camp on some main route, and make lateral excur- 

 sions to any points of interest between Black river and the eastern branch 



of Cache river. 



Along the line of your route, you will endeavor to see the gentlemen 



whose names are in the list herewith furnished, under the head of the 

 counties through which you pass, for the purpose of obtaining information 

 in regard to localities considered of special interest, and make a geologi- 

 cal exploration of those which may be co«sidered important. 



You will, also, make inquiries in regard to sections r of rocks exposed 

 on- Black and Cache rivers, and examine the same, in order to obtain a 

 clue to the formations of that part of Arkansas. 



I would particularly call your attention to a locality in Randolph county, 

 on Mr. McLaires' land, supposed to contain iron; also, to a locality near 

 Pocahontas, in the same county, which is, perhaps, an extension of the 

 same bed; also, to deposits of black oxide of manganese, supposed to 

 exist in some of the northern counties. 



In your descent of the valleys of Black and Cache rivers, you will 



