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MAP OF THE GARDEN 
A map of part of the Garden was printed twelve years ago. For 
some time W.P.A, assistants were at work preparing a new map 
of the whole Garden. Last year arrangements were made to have 
the new map re-drawn by Mr. E. D. Weldon, of the American 
Geographic Society. This map is now (December) being printed 
in two colors, and should be ready for distribution early in 1940. 
EvoLuTIoN GROUP 
A number of improvements, including the installment of new 
labels, were made in House No. 2 of the Conservatories, relating 
to Plant Classification and Evolution, illustrated on the opposite 
page, The general label for the house now reads as follows: 
The Principal Groups of Plants 
— 
o 
In this house plants are arranged to suggest relationship. 
How do we find out these relationships ? 
(1) By comparing the different kinds of living plants with each other. 
(Morphology. 
(2) By comparing stages in the development of the individual plant. 
(Ontogeny. ) 
(3) By the study of plant fossils. (Paleontology.) 
From such studies it is concluded: 
That Algae represent the earliest or water stage of plant life. 
That Lichens, Liverworts and Psilotwm represent various early stages of 
plant life on land. 
That Ferns are a middle stage of land life. 
That Flowering Plants (Angiosperms) are the typical modern plants. 
Included in this collection are a few models, made by Miss 
Purdy, namely: bread-mold (Rhizopus), Pesiza, Collybia, Boletus, 
Anthoceros, Rhynia, and fern-prothallia with young sporophytes— 
plants not easily maintained in living and fruiting condition. 
CLASSES 
In the spring I gave ten outdoor lessons on Herbaceous Plants. 
Small specimens were given to members of the class and some 
