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and geography are the following useful plants from the tropics 

 and subtropics : banana, orange, lemon, lime, kumquat, tamarind, 

 West Indian cedar (the source of the wood used for cigar boxes), 

 eucalyptus, Manila hemp, sisal, pandanus (source of the fiber used 

 for making certain kinds of fiber hats), fig, grape vines from 

 north and south Africa, date palm, cocoanut palm, chocolate tree, 

 coffee, tea, ginger, bamboo, mahogany, balsa, cocaine plant, black 

 pepper, cardamom, olive, pomegranate, logwood, durian, mango, 

 sugar cane, avocado (so-called "alligator pear"). West Indian 

 and other rubber plants, banyan, religious fig of India, and nu- 

 merous others. 



The Conservatories are open April 1 to November 1, 10 a.m.- 

 4:30 p.m. (Sundays, 2-4:30) ; November 1 to April 1, 10 a.m.- 

 4 p.m. (Sundays, 2-4). 



Herbarium 



The Garden herbarium consists at present of over 186,000 speci- 

 mens, including phanerogams, ferns, mosses, liverworts, lichens, 

 parasitic and other fungi, algae, and myxomycetes. This collec- 

 tion may be consulted from 9 a.m. until 5 p.m. by those interested, 

 and specimens submitted will be gladly identified. 



Library 



The rapidly growing library of the Garden comprises at present 

 over 10,400 volumes and over 7,000 pamphlets. This is not a cir- 

 culating library, but is open free for consultation to all persons 

 daily (except Sundays and holidays) from 9 a.m. until 5 p.m. 

 (Saturdays, 9 to 12). Over 800 periodicals and serial publica- 

 tions devoted to botany and closely related subjects are regularly 

 received. 



Laboratory Building 



The Laboratory Building contains (besides offices of administra- 

 tion and the Library and Herbarium mentioned above) four lab- 

 oratory rooms, a culture room, two classrooms with stereopticon 

 and other equipment for instruction, a room for the installation of 

 temporary exhibits, six private research rooms, and an auditorium 



