INTRODUCTION. 



The Lloyd Library is devoted almost exclusively to Botanv. 

 Materia Medica, and Pharmacy, with a section of Eclectic Medicine. 

 It contains at this time 32.434 volumes, which is possibly the 

 most extensive collection of books and periodicals directly per- 

 taining to these subjects. The pamphlets, of which there are many 

 thousands, are systematically arranged by authors. From twenty- 

 five to fifty of them are placed in a cover and each cover is counted 

 as one volume. 



In the Lloyd Library there has been compiled a catalogue of the 

 various books and their editions, pertaining to our subjects, svs- 

 tematically arranged by authors. This catalogue has been made 

 from all available sources, such as Jackson's "Guide to the Litera- 

 ture of Botany", Pritzel's "Thesaurus Literaturae Botanicae", 

 "Botanische Centralblatt", "Index Catalogue of the Library of the 

 Surgeon General's Ofifice", and book notices in various journals, 

 and its compilation has been a work requiring several years of labor. 

 It is systematically kept up to date, the new entries being made 

 as the books appear. This catalogue is typewritten on what is 

 known as the loose leaf ledger system, so that the sheets can be 

 taken out and the entries made in their proper place and new sheets 

 inserted. The catalogue contains 3,087 sheets, with 64,436 entries, 

 representing approximately 43,000 volumes and 21,000 pamphlets. 

 It is probably the most complete bibliography of the subjects that 

 has ever been brought together. 



If this catalogue were printed in its entirety it would be a most 

 convenient reference book for libraries and authors, but such a 

 publication would involve an expenditure and labor bevond the 

 modest resources of our institution. 



Llowever, in order that the work done in our librarv on this 

 catalogue may be available to others, it is our intention to'graduallv 

 publish bibliographies of the various sections of the library, taken 

 from our catalogue. The books that are now in our library are 

 indicated by the shelf numbers printed in heavy faced type, 

 pam])hlets by a heavy faced star, and may be seen at a glance in 

 looking through the catalogue. It is gratifying to us to be able 

 to show such a large proportion of them now in our library, and 

 we are systematically endeavoring to acquire those that are missing. 



Two sizes of type are used, the large size indicating books or 

 volumes and the small size indicating the pamphlets. We onlv 

 catalogue as pamphlets those that have been issued as separate 

 publications, or those that are taken from some book or serial pub- 

 lication not devoted exclusively to the subjects of our librarv. A 

 large number of pamphlets which are merely excerpts from botan- 



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