94 Forest Club Annual 



outcrop is not referred to the plane of the horizon, but is con- 

 trolled by the topography. It is only when the surface of the 

 ground is level, or the strata are in a vertical position that out- 

 crop and strike become coincident. 



Mining law does not always recognize the geologist's de- 

 finition of "strike" or vein. The Courts use the term "course" 

 as synonymous with "strike" and define the "course" or "strike" 

 of a vein as "its continuous apex", that is, "the path of the apex 

 across the country if the vein outcrops, (or if the apex out- 

 crops, as the Courts state it) or the wandering direction taken 

 by that apex underground, if it does not outcrop". The mining 

 law acts define "strike" as about synonymous with the geolo- 

 gists' conception of "outcrop". The Courts define "apex" in 

 its application to veins as the end or edge of a vein nearest 

 the surface, or the highest part of a vein along its entire 

 course. In several legal cases, "top", "apex", and "outcrop" 

 have been used synonymously. 



Fig. 6. Ground plan illustrating outcrop, strike and dip. 



