VERTICAL AND INCLINED SURFACES OF SEPARATION 



295 



should lie between DQP points 37 and 33, and of the western between DQP 

 points 29 and 28. 



The configuration of the ohm isolines should be the same for the plus 



DQP N+27 



DQPN + 32 



DQP N-35 



.\ 



DQP N-36 



'■ \ 



-&' 



j;^ 



A-r--'W' 



<-K/ 



\ 



< 



DQP N-37 





y 



DQP l\J-32 



B 



DQPN-26 



DQPN + 30 



•v, 



4- 



Lir.KalCZDtb), l.(c)\ 



\^-_-^- 



FiG. 17. a— area of a DQP curve with increased values of qj^ ; 6— area of a DQP curve 

 with decreased values of p/, ; c— DQP curve corrected for the influence of surface non- 

 horizontal boimdaries. 



