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tions of hardy and ornamental plants with large Arboretum, Frutt- 
cetum and natural hemlock forest, Thompson aaa Rock 
Garden, Rose Garden, ae ae pools, Perennial Border 
nual Borders, displaying i in many varieties of setae eilarse 
greenhouses with cone cheMaNG chslsy of tropical plants, flower 
shows throughout winter and spring. 
Publications: 
Journal. Established 1900. Monthly. $1.00 a year. 
Mycologia. Established 1909.  Bi-monthly. Subscription 
North American Flora. Established 1907. Issued in parts at 
irregular intervals. Planned to be complete in 34 volumes. 86 
parts now issued (July, 1938). Sold only by subscription. 
Addisonia. Established 1916. Semi-annual. Devoted to col- 
ored plates and descriptions. Subscription $10.00 a volume (2 
years). 
Brittonia. Established 1931. Issued irregularly. Subscrip- 
tion, $5.00 a volume. 
Memoirs. Established 1900. Issued irregularly. Subscription 
to members of the Garden $1.50 a volume; to others $3.00. 
Seed Exchange List. Annually. 
Museum: Open free, daily, from 10 a.m. to 4: 30 pm. Lec- 
tures: Special lectures are given to school children at the garden, 
but not at schools. Education: School for professional gardeners, 
classes in botany and practical gardening ; docentry for classes from 
the public schools and groups of adults. Free public lectures 
throughout the year. Affiliation: Columbia University. 
PORTAGEVILLE 
LETCHWORTH PARK ARBORETUM 
Established: Park, 1907. Arboretum, 1912. Area: About 1000 
acres. 
Director (Advisor): George B. Sudworth (1912-1927). 
Occupies a strip of land extending for three miles along both 
banks of the Genesee River, given to the State of New York in 
1907 by William Pryor Letchworth. A museum and library 
building was erected in 1912-1913. “ The object in establishing 
the Arboretum was primarily to promote the study of tree growth 
under varying conditions of soil temperature, exposure, etc. Also 
