Stevenson. J ^"t) [Feb. 5, 



chert almost horizontal. The sandstone is the highest rock in the hill. 

 The section is as follows : 



1. Sandstone 60 ft. 



2. Chert 6-12 ft. 



3. Shale and li mestone 9 ft. 



4. Black shale 3 ft. 



5. Goal 6-12 inches. 



6. Shale and sandstone 120 ft. 



7. Sandstone to river not measured. 



Th6 chert is light-red to yellow, and in some cases dove colored. It is 

 quite compact, and forms a striking feature in both sides of the break as 

 well as on the hills within it. It is well exposed on the pike, where it 

 has been used for macadamizing the road. The limestone in No. 3, 

 occurs in nodules, varying from two inches to two feet in diam eter. It 

 is variegated and extremely compact. If a sufficient quantity could be 

 obtained, this would be valuable as an ornamental marble for indoor use, 

 since it receives a beautiful polish. The coal is sulphurous and slaty. 

 It can be seen on the pike near each edge of the break. The sandstone, 

 No. 1, is said to contain a coal, eight inches thick. The black shale 

 overlying the coal No. 5, is quite rich in fossils. In a few minutes, I 

 obtained from it a large number of individuals belonging to the following 

 species: Chonetes granuUfera, Solenomya sp., ScJiizodus sp., Pleuroto- 

 maria graymlUensis, Bellerophon montfortianus, Bellerophon percarinatus 

 and Euomphalus subrugosus. From this shale some very fine specimens 

 of a Nautilus, allied to N. occidentalis, have been procured. 



Near Freeport P. O., midway in the break, a well was bored to the 

 depth of fifteen hundred feet, but the record seems to be wholly lost. All 

 accounts agree in stating that for several hundred feet before the work 

 was stopped, the drill passed through nothing but red shale. In a boring 

 made near the middle of the break, thin coals are said to have been met 

 at sixty, eighty and one hundred and twenty feet, respectively, from the 

 surface. By comparing the results of two borings made here by Mr. J. 

 Lillie, I make out the following partial section within the break : 



1. Sandstone 60 ft. 



2. Chert........ 6-12 ft. 



3. Shale and limestone 9 ft. 



4. Shale 3 ft. 



5. Coal 6-12 in. 



6. Shale : 30 ft. 



7. Sandstone 59 ft. 



8. Shale 41 ft. 



9. Sandstone 105 ft. 



10. Shale 9 ft. 



11. Sandstone 76 ft. 



