but those were private persons or property has been as follows: (1) steam-engines with coal-fired boilers; (2) steam-engines with coal-fired boilers; (2) steam-engines with oil-fired boilers; (3) internal-combustion en- gines, such as loans to the possession of a considerable degree of improvement. Duff S. Allen and E. Licent, id., vol. 25 (1925), (China and Indo-China); R. Torii, Jour. Coll, Sci. Imp. Univ.