24. On Chao Mêng-fu see S.W. Bushell, Chinese Art (1910), II, pp. 133--59; H.A. Giles, Introd. to the History of Chinese Pictorial Art (Shanghai, 2nd ed., 1918), pp. 159 ff.; the whole of c. VI of this book on the art which flourished under the Mongol dynasty is interesting. See also L. Binyon, Painting in the Far East (1908), pp. 75-7, 146-7. One of Chao Mêng-fu's horse pictures, or rather a copy of it by a Japanese artist, is reproduced in Giles, op. cit., opposite p. 159. See also my notes on illustrations for an account of the famous landscape roll painted by him in the style of Wang Wei.
25. Bushell, op. cit., p. 135.
26. Ibid., pp. 135-6, where the picture is reproduced.
27. For the episode of the mangonels constructed by Nestorian mechanics under the directions of Nicolo and Maffeo see Marco Polo, op. cit., pp. 281-2.
28. Marco Polo, op. cit., bk. III, c. I, pp. 321-3.