. . . . . "nder the flag of the United States or of some other government; malicious destruction of or attempt to destroy railways, trams, vassels, bridges, dwellings, public edifices, or other buildings, when the act endangers human life, and who shall depart or flee, or who has departed or fled, from justice therein to the United Statcs, or to any Territory thereof, or to the District of Columbia, shall, w" .