all grades and classes, for their generous and courteous assistance in the preparation and completion of the Bibliography. The consultation of many hundreds of volumes of one author, and the permission to retain a vast number in daily use, have entailed exceptional labour on a section of the staff. I have every reason to be grateful.
I am indebted to Mr. A. W. Pollard, of the British Museum, for advice and direction with regard to bibliographical formulæ; to Mr. G. L. Calderon, late of the staff, for the collection and transcription of the title-pages of Polish, Russian, and Servian translations; and to Mr. R. Nisbet Bain for the supervision and correction of the proofs of Slavonic titles.
To Mr. W. P. Courtney, the author of Bibliotheca Cornubiensis, I owe many valuable hints and suggestions, and the opportunity of consulting some important works of reference.
I have elsewhere acknowledged the valuable information with regard to certain rare editions and pamphlets which I have received from Mr. H. Buxton Forman, C.B.
My especial thanks for laborious researches undertaken on my behalf, and for information not otherwise attainable, are due to M. J. E. Aynard, of Lyons; Signor F. Bianco; Professor Max von Förster, of Würtzburg; Professor Lajos Gurnesovitz, of Buda Pest; Dr. Holzhausen, of Bonn; Mr. Leonard Mackall, of Berlin; Miss Peacock; Miss K. Schlesinger; M. Voynich, of Soho
