color of the rock continues to bo 



The Court-house Rock, abon 



miles south of the river, on Lawr 



1. 10 feet, middle fine-grained, ( 



2. 40 feet arenaceous strata, wit! 



5. 10 feet more solid, and a little coarser sandstone. 



6. 50 feet fine, loose material, like No. 4, with the two white el 



there is a good deal of calcareous substance, and a stra 

 sand. 



7. 105 feet finely arenaceous strata, with interstratitications of nu 



shales. 



8. 30 feet buff-colored argillo-arenaceous shales, containing far 



would probablv correspond to 450 feet above Platte River. 



The Chimney Rock is about 11 miles, in a straight line, dil 

 house Rock, in west-northwesterly direction. About 2 miles fi 

 i the sa 



It is remarkable 



how this Blender spire of rather soft rocks could have been preserved in its isolated 



position, while the same formations all around were demolished. Its upper part is 



cleft asunder, and threatens to fall down. That it has been higher, and the uppermost 



portion has been destroyed, within the memory of now living men, may be no idle 



* Tl, flll ,, aw of rock which cover the ba-e correspond to those ot the hiirhcst 



story. Ine masses ot ioikvuucu u>\u me oa. e , ^ . 



Chimney Rock, partly, where I could not climb higher there, from the corresponding 

 strata of these bluffs, which exceed it in height by L30 feet : 



a, 130/^—^ ^w^ 



1. 130 feet loose, grayish, and buff-colored sandstone, oi a middle hi.,- gram, irregu 

 larly interspersed with concretionary masses ot a harder sandstone, and wit i 

 more regular, thicker seams of it, generally forming steps in the slope 10 to 

 15 feet apart. The lowest 50 teet form one step, with mih a ledge ot mu i 

 rock on top, besides the irregular masses which are dispersed through it. 



b. 115 feet-the chimney itself, with a diameter of about 50 feet at the base, and 

 only slightly tapering upward. 



