INTRODUCTION. 



The Lloyd Library at tlie present time contains 37,175 vol- 

 umes. It is devoted almost exclusively to Rotany, ]\Iateria Medica, 

 and Pharmacy, with a section of Eclectic Medicine. 



The general plan of the divisions of the Library was explained 

 in detail in the second issue (April, 191 1) of this publication. 



The data relative to publications not in our Library have been 

 gathered from various sources, as stated in our second issue. In 

 preparing this issue we have compared also "Catalogue of the 

 Library of the British Museum," Index to Botanical Literature 

 of the "Bulletin of the Torrey Club," and Britton's "List of State 

 and Local Floras of the United States and British America." 



This number embraces section R, which is subdivided as fol- 

 lows : 



R. North America. 



RC. Greenland. 



RD. Alaska. 



RE. Canada. 



RF. United States. 



RI. New England. 



RJ. Eastern States. 



RK. Lake States. 



RL. Southern States. 



RM. Southwestern States 



RN. Western Prairie States. 



RO. Rocky Mountain States. 



RP. Pacific States. 



RO. Mexico. 



RR. Central America. 



-RS. West Indies. 



Books or pamphlets that are in the Lloyd Library are indicated 

 bv heavy-face shelf numbers'or bv a heavv-face star. 



