Letter from John Zachary Young, on a paper 'The influence of geographic isolation on the skull of the green monkey. II The cranial dimensions of the St Kitts and African green money' by E H Ashton and Solly Zuckerman, to D C Martin, assistant secretary of the Royal Society Paper reference code: B42 Young has gone through Ashton and Zuckerman's paper and requests permission to discuss certain points with Zuckerman regarding this. Written at University College London, Department of Anatomy [England]. [Published in Proceedings B, 1951]. Endorsed on recto as received 3 October 1950. 2 October 1950