92 REPORT OF THE 



2. Shale, 2 ft - 



1. Limestone and gypsum, more than 4 ft. 



Total, 51 ft. T in. 



The following is the section at Hovey & Co.'s plaster quarry- 

 within a few rods of the last: 



16. Loam, 6 ft. 



15. Clay, 3 ft. 



14. " Water limestone," 1 ft - 



13. Shale, 4 ft. 



12. Gypsum, 10 in. 



11. Shale, 1 ft. 3 in. 



10. Water limestone and clay in thin layers 2 ft. 



9. Shale 3 it. 



8. Gypsum, 1 ft 6 in. 



7. Shale, 3 ft. 



6. Water limestone, 10 in. 



5. Shale 4 ft. 



4. Gypsum, 6 ft. 



3. Shale, 1 ft. 3 in. 



2. Gypsum, 13 ft. 



1. Gypsum, hard, rather dark colored, through which 



the excavations have not yet extended. 



Total, 44 ft. 8 in. 



In establishing a parallelism between these two sections, it 

 is probable that we must regard Nos. 1 and 2, (Hovey,) as the 

 equivalent of No. 3, (McReynolds;) No. 3 (H.)=4 (McR.) &c; 

 No. 13, (H.) corresponding to 14 (McR.); 14 (H.) to 16 (McR.); 

 15 (H.) to 18 (McR.); so that the beds 15 and 17, (McR.) find 

 no equivalents in Hovey's quarry. 



The 13 feet bed of gypsum is a pure and solid mass. At top 

 it is reddish, veined with the bluish color of the shale; below, 

 it becomes more bluish as a mass. At the center the fracture 

 and lustre remind one of hornstone, the mineral being trans- 

 lucent, fine grained, compact and homogeneous. Prom this to 

 the bottom of the bed, is a mottled and clouded gypsum of a 

 coarsely fibrous structure. 



The shales of McReynolds & Stewart's quarry are said to 



