Generally, there is a greater amount of damage caused by sea transport of art objects than by air transport. The damages caused by the machinery used for loading account for most sea transport damage. Mold generation and possible metal corrosion are also results of sea transport. potential damages in air transport are due to changes in temperature and air pressure. Packing cases can be lined with styrofoam sheets and relative humidity can be controlled by silica gel to prevent these damages. The author suggests inserting an insulating area of humidity-contolled and thermally insulated air between the accommodation space and the sealed part of the package. The invading air stream drives the air contained in the insulating space into the interior of the package and prevents direct contact of the object with the outer air. Japan now uses double casing with cloth-lined aluminum foil as an inner wrapping, and seasoned silica gel. The author feels that accurate data regarding relative humidity, temperature, and pressure during air travel must be obtained. See also 15-106. -- AATA