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D. Courses for Special Groups 
D1. General Botany with Special Reference to Medicinal 
Plants.—A course of 10 spring or 10 fall lectures, demonstra- 
tions, and field trips for student nurses. Arranged in cooperation 
with various hospitals. The general principles governing the life 
of plants, as well as the use and care of flowers and potted plants 
in the sick room, are considered. Special attention is paid to the 
outdoor identification of officinal plants. Hours to be arranged. 
No fee. Dy. (staves: 
D2. Trees and Shrubs: Spring Course for Employees of 
the Park Department and Others.—Ten trips in the parks 
and woodlands of New York to become acquainted with the com- 
mon kinds of woody plants, both native and cultivated. The hab- 
its, rate of growth, economic value, and importance in forestry, 
horticulture, and landscape art are discussed. Ice to non-members, 
$5, free to members of the Garden. Thursdays, 2:30 p.m. April 
17 to June 19, First meeting at Brooklyn Botanic Garden. For 
park employees the necessary time for attending will be arranged. 
Dr. Graves and Mr. Doney. 
D3. Trees and Shrubs: Fall Course for Employees of the 
Park Department and Others.—Ten trips in parks and wood- 
lands of New York to become acquainted with the common kinds 
of woody plants, both native and cultivated. The habits, rate of 
growth, economic value, and importance in forestry, horticulture, 
and landscape art are discussed. Fee to non-members, $5; free to 
members of the Garden. Thursdays, 2:30 p.m., October 10 to De- 
cember 19 (omitting Thanksgiving Day). First meeting at Brook- 
lyn Botanic Garden. For park employees the necessary time for 
attending will be arranged. Dr. Graves and Mr. Doney. 
D4. Gardening: for Employees of the Park Department and 
Others.—Twelve periods. Soils and fertilizers; planting and 
transplanting (trees, shrubs, bulbs, perennials, etc.) ; lawn-making 
and maintenance; herbaceous perennials, including bulbs; annuals 
and biennials; rose growing; rock and water gardens; insect and 
fungous pests; pruning; plant propagation; principles of green- 
house management. f*ee to non-members, $6; free to members of 
