viii PREFACE. 



Bibliothek, Strassburg ; and the Libraries in the United States of 

 America) 



In the preparation of this volume I have enjoyed the facilities offered 

 by the following Libraries and Institutions, and I hereby express my 

 hearty thanks to the respective Librarians and other Officers for their cour- 

 tesies and for special privileges : British Museum, London ; Patent Office, 

 London ; University Library, Cambridge ; Free Library, Birmingham ; 

 Bibliotheque Nationale, Paris ; Bibliotheque de la Sorbonne, Paris ; Biblio- 

 thequedu Jardin des Plantes,Paris; Bibliotheque du Conservatoire des Arts 

 et Metiers, Paris ; Bibliotheque de la Societe chimique de Paris ; Biblio- 

 theque Mazarin, Paris; K. Universitats- und Landes-Bibliothek, Strassburg; 

 Grossh. Universitats Bibliothek, Heidelberg ; Grossh. Hof-Bibliothek, 

 Darmstadt ; Konigliche Bibliothek, Berlin ; K. Universitats Bibliothek, 

 Prag ; Buhmisch National Museum, Prag ; K. K. Hof Bibliothek, Wien; 

 K. K. Universitats Bibliothek, Wien ; Bibliothek der K. K. technischen 

 Hochschule, Wien ; K. Universitats Bibliothek, Budapest ; K. Akademie 

 der Wissenschaften, Budapest ; K. K. Oeffentliche Landes- und Studien- 

 Bibliothek, Salzburg ; Bibliothek des Carol Aug. Museum, Salzburg ; 

 K. Hof- und Staats-Bibliothek, Mtinchen : K. Oeffentliche Bibliothek, 

 Stuttgart ; Library of the Surgeon-General's Office, United States Army, 

 Washington ; Library of Congress, Washington ; Scientific Library of 

 United States Patent Office, Washington ; Public Library, Boston ; 

 Athenaeum, Boston ; Massachusetts Institute of Technology, Boston ; 

 Harvard College Library, Cambridge ; Dartmouth College Library, 

 Hanover, N. H ; Amherst College Library, Amherst, Mass.; Library of 

 Columbia College, New York ; Astor Library, New York ; Library of the 

 New York Academy of Sciences. 



I am also under obligations to Prof. Charles F. Chandler, Ph.D., M D., 

 LL.D , of Columbia College, New York, and to Prof. Rudolph A. Witthaus, 

 M.D., of the Medical College of the University of the City of New York, 

 for permission to catalogue their valuable private collections. 



I am very greatly obliged to Dr. Alfred Tuckerman, of Newport, R. I., 

 for voluntary assistance ; he made a preliminary examination of Poggen- 

 dorff's Handworterbuch, as well as of Zuchold's and Ruprecht's Bibliotheca, 

 copying many titles for this Bibliography with accuracy and fidelity. 



I am also specially indebted to Prof. Bohuslav Brauner, of Prag, fo' 



