Portrays vegetation, roads and tracks, settlements, aerodromes, place names and amendments, boundary points and the international boundary, and includes topographical notes. The sheet bears a note relating it to Sheet 16 at WOOS/34/1.
The journey proceeded from Peking (北京) south-westwards to Chengtu, Szechwan (成都, 四川), thence north to Lanchow, Kansu (蘭州, 甘肅), and south-westwards through Tsinghai (青海) and Tibet (西藏) to Sikkim.
The journey proceeded from Bhamo (Burma), eastwards to Yunnanfu (雲南府), then north to Suifu, Szechwan (敘府, 四川) where the journey was paused. At this point Pereira travelled by boat to Hong Kong, where he rested before leaving for Hainan (海南). He recommenced the original journey at Yunnanfu, arrivi...