FIG. 1 is a perspective view of my design for a electronic book;

FIG. 2 is a front elevational view of the electronic book of FIG. 1;

FIG. 3 is a rear elevational view of the electronic book of FIG. 1;

FIG. 4 is a top plan view of the electronic book of FIG. 1;

FIG. 5 is a right end elevational view of the electronic book of FIG. 1;

FIG. 6 is a left end elevational view of the electronic book of FIG. 1; and,

FIG. 7 is another perspective view of my design for a electronic book showing the electronic book in its closed position.

The hand fragments depicted by means of broken lines in FIGS. 1 and 7 have been shown for illustrative purposes only and form no part of the claimed design.