Observations are given which favor a reticulate chain structure for carbon black. The discovery of ``hollow'' particles in carbon black dispersions of P‐33 and Thermax is reported along with possible explanations for the observed image intensities which give rise to the interpretation of hollowness. Striated surfaces strongly suggestive of a laminar structure and serrated edges which conform in orientation with these plateaus have been detected. Rough areas arranged both in lines and at random are observed over the surfaces of some particles. Shape variations away from the spheroidal and the occurrence of straight‐edged images are stressed again.