The direct observation of networks of dislocations between platelets of folded‐chain polyethylene crystals has been accomplished using diffraction contrast electron microscopy. The networks are composed of dislocations, primarily in their screw orientation, having Burgers vectors [110], [100], and [010]. The [110] dislocations are invariably dissociated into ribbons and there is evidence that the other two also tend to dissociate. Singularities in the networks are interpreted in terms of interactions between the partial edge dislocations previously detected by moire´ patterns and glissile screw dislocation ribbons. These observations prove that folded‐chain surfaces are sufficiently regular to pack crystallographically and that slip between folded‐chain platelets can occur by the motion of dislocations.