The Commercial Revolution in Nineteenth-Century China: The Rise of Sino-Western Mercantile Capitalism. By Hao. Yen-p'ing [Berkeley and Los Angeles: University of California, 1986. 394 pp. $31.95.] - America's China Trade in Historical Perspective: The Chinese and American Performance. Edited by Ernest R. May and John K. Fairbank. [Cambridge, Mass: The Committee on American East Asian Relations of the Department of History, Harvard University, Harvard Studies in American-East Asian Relations, No. 1, 1986. 388 pp. $17.95.]