This paper is a discussion of the effects, on the use of the electrostatic energy spectrograph for charged particles, of the field distortions at the edges of the spectrograph plates and in between the plates. These effects are evaluated and shown not to be negligible in measurements of highest precision. It is shown how, by properly locating the source and detector of charged particles, to eliminate these effects to the extent of a first approximation. The discussion is carried through for only one particular form of spectrograph plates, but the modifications necessary to make it applicable to any other form of spectrograph are adequately pointed out.