Copy letter from Robert William Frederick Harrison, to The Secretary, Kon Akademie van Wetenschappen, Amsterdam Sending a receipt for £8, their Academy's contribution to the expense of the International Association of Academies for 1902. Also acknowledges their letter naming Professor H G van de Sande Bakhuyzen and Professor H Kern as delegates upon the International Council of Association, and Professor B J Stokvis and Professor S A Naber as their substitutes. 6 May 1902