Notebook with mathematical notes, diagrams and problems. Also contains philosophical musings on man and war, geometrical drawings, notes on Chinese words, diagram for creating a weigh balance, instructions to extract salt and draft lines for a poem. Handwritten in a blue paper cover notebook written from both ends. Reverse cover is missing. Cover states "Some philosophical observations in this book".

Notebook containing notes on Tibetan vocabulary. Also some Latin notes and notes on events and people in China; grammar notes; English lists of words. In the back of the book is a partial journal of his time in Tibet - mostly the beginning of the journey and includes an entry about meeting the Dalai Lama "This day I saluted the Grand Lama!! Beautiful Youth. Face poetically affecting. Could have wept. Very happy to have seen him & his blessed smile. hope often to see him again". Large, half-calf notebook, warped, handwritten in pencil and ink.
Inserted into the notebook:

• Note to and from Thomas Beale concerning whether Beale was expecting the Hoopoo, handwritten, undated
• Vocabulary list 4 sheets of Chinese writing including two copies of a contract between Manning and Gao Hengxin for 1000 yuan, dated 20 January 1815
• "Recipe for [Hang yummtoy] or Almond Syrup", Letter from Sian Seng.

These 4 letters concern Abel Yen's service to Manning and the use of his dictionary.

• Letter from Abel Yen to Thomas Manning after his recommendation by Elphinstone. He mentions Elphinstone and Ball and the dictionary in his possession. Undated, handwritten in Latin, 1 piece, 1 side
• Note from Abel Yen to Thomas Manning to accompany his dictionary. Undated, handwritten in Latin, 1 piece, 1 side
• Letter from Abel Yen to Thomas Manning. He mentions a letter from Ball. Undated. Handwritten in Latin, 1 piece, 1 side
• Letter from Abel Yen to Thomas Manning. Undated, Handwritten in Latin, 1 piece, 1 side.