PREFACE. 



The Lloyd Library is devoted almost exclusively to 

 Botany, Materia Medica, and Pharmacy, with a section 

 on Eclectic Medicine. It contains at a conservative esti- 

 mate twenty-five thousand volumes, wdiich is possibly the 

 most extensive collection of books and periodicals di- 

 rectly pertaining to these subjects. It is now in exten- 

 sive use, as evidenced by the number of persons who 

 consult its contents, as well as by the increasing in- 

 quiries for bibliographical information concerning special 

 subjects. 



It is the intention to publish quarterly catalogues 

 devoted to the various departments of our library, of 

 which this, the introductory number, is devoted to the 

 periodical literature. The object of these catalogues is 

 twofold : 



First — To let it be known what publications are now 

 in our library, so that persons wishing to consult them 

 may know where they ma}' be seen. 



Second — To indicate the publications we do not have, 

 but desire to obtain, hoping that correspondents may be 

 able to supply them. We shall be very glad to hear 

 from any one who can furnish a missing part, or help to 

 complete a set, and shall be thankful for copies of anj^ 

 publication on these subjects not now in our catalogue. 



These Bibliographical Contributions are to be issued 



regularly, it being designed that the next number shall 



contain a catalogue of the general Floras of Europe and 



those of Great Britain. 



THE LLOYD LIBRARY. 



