Copy letter from Robert William Frederick Harrison, to Professor Gregorio Manca, Laboratorio di Fisiologia della R Universita di Sassari 'Memo [Memorandum] The Royal Society has no more copies in stock of the separate papers containing Prof. [Professor] Karl Pearson's contribution on Skew Variation (II) and the Supplement (X). Perhaps Prof Pearson might have spare copies at disposal. His address is University College, Gower Street, London, W.C.' 9 April 1907