PREFACE. 



VII 



Eames has compared the titles of works coataiued iu his owa library 

 aiul ill the Leuox, and recourse has been had to a uuiuber of librarians 

 throughout the country for tracings, photographs, eti-. The result is 

 that of the .517 works des-ribed d!' risii comparison of proof has been 

 made direct with the original sources in the case of 424, In this later 

 reading collations and descriptions have been entered into more fully 

 than liad previously been done and capital letters tre.ited with more 

 severity. 



WasiiinctTON, D. 0., June 15, 1S92. 



