Signed with the artist\'s monogram and dated 29 (lower left); signed with the artist\'s monogram, titled, numbered no. 335 and dated 1929 (on the verso)
Watercolor and pen and ink on paper mounted on card
(i) Channel Space Snake Isometric (ii) Slip Space Double Extend (iii) Passage Space Gate 2 – Ratio (iv) Passage Space Drift Isometric-Will-Insley ((i) 通道空间蛇形等距图(ii)滑动空间双延伸(iii)通道空间闸门2–比率(iv)通道空间漂移等距图-威尔·英斯利)