chapter XXXV

;

Alonzo H. De Graff, London, for his invaluable aid and unflagging zeal in directing the London researches;

To the Coffee Trade Association, London, for assistance rendered;

To G.J. Lethem, London, for his translations from the Arabic;

Geoffrey Sephton, Vienna, for his nice co-operation;

L.P. de Bussy of the Koloniaal Institute, Amsterdam, Holland, for assistance rendered;

Burton Holmes and Blendon R. Campbell, New York, for courtesies;

John Cotton Dana, Newark, N.J., for assistance rendered;

Charles H. Barnes, Medford, Mass., for permission to publish the photograph of Peregrine White's Mayflower mortar and pestle;

Andrew L. Winton, Ph.D., Wilton, Conn., for permission to quote from his _The Microscopy of Vegetable Foods_ in the chapter on The Microscopy of Coffee and to reprint Prof. J. Moeller's and Tschirch and Oesterle's drawings;

F. Hulton Frankel, Ph.D., Edward M. Frankel, Ph.D., and Arno Viehoever, for their assistance in preparing the chapters on The Botany of Coffee and The Microscopy of Coffee;

A.L. Burns, New York, for his assistance in the correction and revision of chapters XXV, XXVI, XXVII, and XXXIV, and for much historical information supplied in connection with chapters XXX and XXXI;

Edward Aborn, New York, for his help in the revision of chapter XXXVI ;

George W. Lawrence, former president, and T.S.B. Nielsen, president, of the New York Coffee and Sugar Exchange, for their assistance in the revision of