嘉道时期洋铜价格与银贵钱贱关系的考察

通过对19世纪初至鸦片战争前洋铜价格的变化及洋铜在当时铸钱用铜 中所占比重大小的分析，认为嘉道时期不同身份的商人采办洋铜的价格虽然有升有降，但 总体是下降的，下降幅度并不大。同一时期洋铜自乾隆初期以降输入中国的数量 逐渐减少，到嘉道时期已占不到全国鼓铸用铜的十分之一。因此，洋铜价格的下降没有给铜 钱质量带来多大影响，洋铜价格的下降与鸦片战争前的银贵钱贱之间也没有因果关系 。

Price of Imported Copper and Devaluation in the Qing's Jiaqing and Daoguang Periods

An analysis of the variation of imported copper from the beginning of the 19th century to the Opium War and of its proportion in casting coins show th at the prices vary with different merchants with the general trend of slight fal l in the Qing's Jiaqing and Daoguang periods. In this same period, the amount of importation was being reduced to less than a tenth of the required amount for c asting. Therefore, the author believed that the fall of price of imported copper then did not affect the quality of coins and there is no causality between the price of copper and devaluation before the Opium War.