Ring tubes (tori) have been observed from the carbon soot. The sample was prepared in the pure nitrogen atmosphere by axcing the graphite electrodes, which was covered with aluminum film. Based on their TEM images, structural model and possible formation mechanism of the species were described. Ring tubes (tori) have been observed from the carbon soot. The sample was prepared in the pure nitrogen atmosphere by axcing the graphite electrodes, which was covered with aluminum film. Based on their TEM images, structural model and possible formation mechanism of the species. were described.