Abstracts for the Xavantina - Cachimbo expedition informal discussion meeting Meeting to be held at the Royal Society 23 - 25 September 1970. There are 22 abstracts listed, although not all the authors had submitted details in time for the 17 September. The following authors are listed as submitting abstracts: E H Brown, Anthony Young, S G Daultrey, J B Thornes, R F Montgomery, D J Moffatt, P L Searl, G P Askew, P W Richards, D R gifford, J A Ratter, F B Goldsmith, R M Harley, C H Fry, M I D Cawley, J Guillebaud, P Hugh-Jones, J Green, R H McConnell, R L Jackson, O W Richards and A G A Mathews. Document reference EB/13(70) 17 September 1970