The correspondence comprises 4 letters from Newton; copy of 1 letter from Joseph Needham. Newton explains that Needham 'very kindly caused some information to be sent to me from China concerning the attempt to make agar during the war.'
The related documents comprise a list of references to the early use of seaweed in Latin literature; draft chapter on the use of seaweed in agriculture from a forthcoming book on the use of seaweed.