Writer, curator, and professor Benjamin Franklin March Jr. (1899-1934) studied, lectured and wrote in the United States and in China. Through his works he became one of the foremost authorities on Chinese art during the 1920s and 1930s. In this essay he analyses the different functions of Western perspective (optical) and Chinese perspective (axonometric) and on what grounds they differ. It is one of the first attempts to understand Chinese pictoral space on a structural and a conceptual level and it became an important reference on Chinese space in Joseph Needham’s book Science and Civilisation in China Vol. 4 part 2 in 1965. This essay was first published in 1927 in The China Journal Vol. VII, No. 2, pp 69-72.