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the doctorate. The laboratories are open for such use only during 
— 
the hours when the Labor; atory Building is regularly open, viz. 
9 am—5 p.m. Mondays to Fridays; 9-12 a.m. Saturdays, except 
on holidays, when the building is closed. There is a charge of 
$25 per year, payable to the Botanic Garden. 
COOPERATION WITH LOCAL SCHOOLS 
The Brooklyn Botanic Garden aims to cooperate in every prac- 
ticable way with the public and private schools of Greater New 
York in all matters pertaining to the study of plants and closely 
related subjects. The purpose of the Garden in this connection 
is to supplement and enrich the school work in the way of instruc- 
tion, demonstration methods, study material, ete., which otherwise 
would not be available. 
Geography classes, as well as classes in nature study and botany, 
find the collection of useful plants in the Economic Plant House, 
the Local Flora Section, the Japanese Garden, and also the Merid- 
ian Panel, the Armillary Sphere, and the Labeled Glacial Boulders, 
valuable adjuncts to their class work. Arrangements may be made 
by teachers of geography to have their classes study these features 
under guidance.  Ilustrated lectures at the Garden for geography 
classes may also be arranged. 
To visiting college classes in geology and physiography the Bo- 
tame Garden offers interesting material for a study of glaciation, 
Notable features are a portion of the Harbor Hill terminal moraine 
(Boulder Hill), the morainal pond (the “ Lake ”), the labelled 
glacial boulders, and the Flatbush outwash plain. See Guide No. 
7, The Story of our Boulders: Glacial Geology of the Brooklyn 
Botante Garden.” 
_ 
Talks at Elementary Schools.—The principals of public or 
private elementary schools may arrange to have talks given at the 
schools on various topics related to plant life, such as school gar- 
dens and garden work with children, tree planting, the conservation 
of wild flowers, Arbor Day, etc. If an illustrated lecture is de- 
sired, the lantern and operator must be provided by the school, 
but slides will be furnished by the Botanic Garden. Address the 
