SHUMARD—GEOL. OF N. MEXICO. 349 
_ The weathered ee of the limestone were of a 
Pane yellow color, and often coated with saline efflorescence. 
When fres tured, it exhibited various shades of blue, 
brown, and black. Passils of the same character as ne men- 
tioned were detected in it, in great numbers, and in many 
place the strata ekpeaied to be alendet entirely composed of 
nerinite colum 
Towards noon we again came in sight of the “Jornada,” 
and soon afterwards descended by a pone» slope from the 
firmly cemented with sain careo The surface of the 
country is hilly, and frequently divided by long narrow ra- 
vines, and presents a gentle slope 6 the west. Near the 
