ants I used Ch'ue T'ung-tsu, Sung Hsi and Wada
Kiyoshi.--For trade, I used extensively Ch'uean Han-sheng and J.
Kuwabara.--On labour legislation in early modern times I used Ko
Ch'ang-chi and especially Li Chien-nung, also my own studies.--On
strikes I used Kato Shigeru and modern Chinese authors.--The problem of
"vagrants" has been taken up by Li Chien-nung who always refers to the
original sources and to modern Chinese research.--The growth of cities,
perhaps the most striking event in this period, has been studied for the
earlier part of our period by Kato Shigeru. Li Chien-nung also deals
extensively with investments in industry and agriculture. The problem as
to whether China would have developed into an industrial society without
outside stimulus is much discussed by Marxist authors in China.

p. 199: On money policy see Yang Lien-sheng, Kato Shigeru and others.

p. 200: The history of one of the Southern Dynasties has been translated
by Ed. H. Schafer, _The Empire of Min_, Tokyo 1954; Schafer's
annotations provide much detail for the cultural and economic conditions
of the coastal area.--For tea and its history, I use my own research;
for tea trade a study by K. Kawakami and an article in the _Frontier
Studies_, vol. 3, 1943.--Salt consumption according to H. T. Fei,
_Earthbound China_, 1945, p. 163.

p. 201: For salt I used largely my own research. For porcelain
production Li Chien-nung and other modern articles.--On paper, the
classical study is Th. F. Carter, _The Invention of Printing in China_,
New York 1925 (a revised edition now published by L. C. Goodrich).

p. 202: For paper money in the early period, see Yang Lien-sheng, _Money
and Credit in China_, Cambridge, Mass., 1952. Although the origin of
paper money seems to be well established, it is interesting to note that
already in the third century A.D. money made of paper was produced and
was burned during funeral ceremonies to serve as financial help for the
dead. This money was, however, in the form of coins.--On iron money see
Yang Lien-sheng; I also used an article in _Tung-fang tsa-chih_, vol.
35, No. 10.

p. 203: For the Kitan (Chines: Ch'i-tan) and their history see K. A.
Wittfogel and Feng Chia-sheng, _History of Chinese Society. Liao_,
Philadelphia 1949.

p. 204: For these dynasties, I rely upon my own research.--Niida Noboru
and Kato Shigeru have studied adoption laws; our specific case has in
addition been studied by M. Kurihara. This sys