Antineutrinos are emitted in the Earth upon &bgr; decays of radioactive elements and reach the surface with little interaction with terrestrial materials. These antineutrinos are anticipated to carry unique information about the chemistry and energetics of the Earth. We make a systematic search for the candidate target materials that undergo nuclear reactions with incoming antineutrinos and therefore that could be used as an antineutrino detector. The target nuclides most preferable for the measurement are 3He and 1H. For 3He we suggest a liquid 3He scintillation counter, of which practicability depends on the feasibility of amassing at least 10 tons of 3He. For 1H we may design as H2O or liquid H2 scintillation counter with an appropriate activator, which should be capable of detecting scintillation light in a huge tank containing at least 104 tons of H2O or 103 tons of H2. ¿ American Geophysical Union 1991