A stick of Chinese ink given to Joseph Needham by the historian Zhang Zigao 張子高 (1886-1976). The stick has a cloud decoration in gold, with the characters 千秋光 in blue in the upper half and a maker’s inscription 徽歙曹素功來孫堯千造 in the lower half. The green cloth box has the handwritten inscription 李約瑟先生請玩 張子高贈 on the underside of the lid.