Over the following two years I published, jointly with Dr Needham, more than six articles concerning ancient Chinese alchemy, meteorology and meridian line measurement. Under my own name were published a substantial study on comets and novas in East Asia, entitled "Ancient and Mediaeval Observations of Comets and Novae in Chinese Sources," which appeared in the magazine Vistas in Astronomy.
此後兩年間，我和李約瑟合作完成了六篇以上有關中國古代煉金術、氣象學、子午線測量方面的文章，另有一篇「中國文獻古代與中古的慧星新星觀測」則以我個人的名義發表在「天文雜誌」上。