New porous carbon materials, ’Woodceramics’, have been developed by carbonizing wood or woody materials impregnated with thermosetting resin, such as phenol resin, in a vacuum furnace at high temperatures. Woodceramics have superior characteristics from the viewpoint of engineering and ecological materials : they are hard and strong, have porous structure and low density, are made from natural resources, do not cause environmental pollution, and are cheap to manufacture. We have carried out differential scanning calorimetry in order to determine the heat capacity at high temperatures.