PREFATORY NOTE. 



The prepuration of the manuscript of this index occupied the years 

 between 1885 and 1889. The printing was commenced in 1890, and 

 owing to the considerate kindness of the Smithsonian Institution in the 

 matter of proofs, it has been found practically impossible to complete 

 the work before the end of 1894 ; and therefore it has been thought 

 advisable to issue the first half — comprising the material A to Non. — 

 tis Part I. Part ii (the concluding portion) will be issued as soon as 

 ready, accompanied by a preface and such emendations as may be 

 found necessary. For the. latter particulars, I shall be mainly in- 

 debted to my friend Fortoscue William Millett, whose knowledge of 

 the literature of the subject is remarkable and peculiar. 



C. Davies Sherborn, 



540 King's Road, London, S. W. 



October, 1893. 



