In the preparation of my Introduction I have, of course, relied
for information on the recognized Biographies of Zola, namely
/Notes d'un Ami/, by Paul Alexis (Paris, Charpentier); /Emile
Zola, A biographical and Critical Study/, by R.  H.  Sherrard
(London, Chatto & Windus, 1893); /Emile Zola, Novelist and
Reformer/: An account of his Life and Work, by Ernest Alfred
Vizetelly (London, John Lane, 1904).  Reference has also been made
to Mr.  Arthur Symons' /Studies in Prose and Verse/, and to
articles in the /Fortnightly Review/ by Mr.  Andrew Lang, in the
/Atlantic Monthly/ by Mr.  Henry James, and in the /Contemporary
Review/ by M.  Edouard Rod, as well as to articles in the
/Encyclopaedia Britannica/ and in the /Dictionnaire Universel des
Contemporains/. 

By kind permission of Messrs.  Chatto & Windus it has been possible
to include the diagram of the Rougon-Macquart Genealogical Tree,
which appears in the Preface to their edition of /Doctor Pascal/,
and to make use of their translations in the preparation of the
Dictionary.  In compiling the latter, Zola's own words have been
adopted so far as possible, though usually they have required such