INTRODUCTION. 



The Lloyd Library is devoted almost exclusively to Botany, 

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

 In recent years we have purchased a few books on Entomology 

 and general Natural History. In future we expect to gradually 

 build up the librar}^ in these lines. It contains at this time 40,929 

 volumes, which is possibly the most extensive collection of books 

 and periodicals directly pertaining to these subjects. The pam- 

 phlets, 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, 

 systematically 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 Centralblat", Index Catalogue of the Library of the 

 Surgeon General's Office", 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, 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, represent- 

 ing 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 beyond the 

 modest resources of our institution. 



In order that the work done in our library on this catalogue 

 may be available to others, we have published bibliographies of the 

 sections of Floras, viz : the botanical sections K, L, M, N, O, P, 

 O, R, S, T, U, and V. We shall now continue to publish the 

 remainder of the bibliography of Botany alphabetically by authors. 



The books that are now in our library are indicated by the 

 shelf numbers printed in heavy-faced type, pamphlets by a heavy- 



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