Abstract
Steam locomotives, that were imported from the United Kingdom at the time of railway construction commencement of Japan in early stages of Meiji period, will be explained, and also the genealogy from the imported steam locomotives to the first domestically-built steam locomotive No.221 (later, renamed class 860) manufactured in 1893 by Kobe Works, Imperial Govement Railway of Japan; IGRJ will be described from the viewpoint of the foreign technology transfer.