ipal Kinds of Coffee Grown in the
World; and the Coffee Bibliography, containing 1,380 references.

The most authoritative works on this subject have been Robinson's _The
Early History of Coffee Houses in England_, published in London in 1893;
and Jardin's _Le Cafe_, published in Paris in 1895. The author wishes to
acknowledge his indebtedness to both for inspiration and guidance. Other
works, Arabian, French, English, German, and Italian, dealing with
particular phases of the subject, have been laid under contribution; and
where this has been done, credit is given by footnote reference. In all
cases where it has been possible to do so, however, statements of
historical facts have been verified by independent research. Not a few
items have required months of tracing to confirm or to disprove.

There has been no serious American work on coffee since Hewitt's
_Coffee: Its History, Cultivation and Uses_, published in 1872; and
Thurber's _Coffee from Plantation to Cup_, published in 1881. Both of
these are now out of print, as is also Walsh's _Coffee: Its History,
Classification and Description_, published in 1893.

The chapters on The Chemistry of Coffee and The Pharmacology of Coffee
have been prepared under the author's direction by Charles W. Trigg,
industrial fellow of the Mellon Institute of Industrial Research.

The author wishes to acknowledge, with thanks, valuable assistance and
numerous courtesies by the officials of the following institutions:

British Museum, and Guildhall Museum, London; Bibliotheque Nationale,
Paris; Congressional Library, Washington; New York Public Library,
Metropolitan Museum of Art, and New York Historical Society, New York;
Boston Public Library, and Boston Museum of Fine Arts; Smithsonian
Institution, Washington; State Historical Museum, Madison, Wis.; Maine
Historical Society, Portland; Chicago Historical Society; New Jersey
Historical Society, Newark; Harvard University Library; Essex Institute,
Salem, Mass.; Peabody Institute, Baltimore.

Thanks and appreciation are due also to:

Charles James Jackson, London, for permission to quote from his
_Illustrated History of English Plate_;

Francis Hill Bigelow, author; and The Macmillan Company, publishers, for
permission to reproduce illustrations from _Historic Silver of the
Colonies_;

H.G. Dwight, author; and Charles Scribner's Sons, publishers, for
permission to quote from _Constantinople, Old and New_, and from the
article o