

290 STRUCTURAL AND FIELD GEOLOGY 
cealed by the peat (#), seeing that the outcrop of the upper 
limestone (4) has been followed without interruption from 
west to east, while there is clear evidence of a continuous 
succession of strata between a and 0, 
In all cases, however, where an outcrop is inferred from 

FIG. I1I.—CONCEALED OUTCROPS. 
indirect evidence, a conscientious and cautious observer will be 
careful to indicate this by drawing dotted or interrupted 
instead of continuous lines. Continuous lines should mean 
that the outcrops are actually visible—that the rock can be 
seen zz sztu,; while interrupted lines should merely indicate 
the position at or near which the observer thinks it likely 
that the outcrop may be found. 
