Envelopes of Holomorphy of Jordan Curves in $\mathbb C^n$

A comprehensive answer is given to two related questions: (i) Can continuous functions be approximated by holomorphic ones on Jordan curves in $\mathbb C^n$ (A. G. Vitushkin, 1964)? (ii) Is any Jordan curve in $\mathbb C^n$ holomorphically convex (E.L. Stout, 1970)?