Connected with the Earth's Field of Force. 131 

 Fig. 1. 



Limiting Cquipotenfial Surface of the Earth . • i — r 



Analytic Continuation^ Limiting Surface ^rotent/al —C 



Ecjuipotential Surface for Potential ^=- 1.02 C 



Analytic Continuation of above 



Equipotential Surface for Potential — 0.98 C 



Fig. 1. — Limiting surface of the atmosphere and adjacent level surfaces; 

 note the difference in the manner in which the level surfaces around the 

 point A connect with one another in passing from one side of the limiting 

 surface to the other. 



