APPENDIX. 
295 
vulsion of nature, more than 100 feet below its former level; for 
some of the huge columns of red clay rise to the height of 200 
feet perpendicular, capped with rocks of gypsum, which the 
hand of time is ever crumbling off, and strewing in beautiful 
transparent flakes along the declivities of the hill, glittering like 
so many mirrors in the sum 
