A preliminary report on the archeomagnetic study of the baked earth of Karatu-_Gama, Susa district, Yamaguchi, Japan.

Some of baked earth samples were collected from three old pottery kilns located at Susa district, Northeast of Yamaguchi Prefecture, West Japan and their natural remanent magnetizations were measured. The geomagnetochronological ages of these kilns were estimated as 1780, 1845 and 1898 A. D. respectively, refering the obtained directions of the natural remanent magnetizations to the geomagnetic secular variation curves for the past 2000 years which were previously published by the several Japanese authors.