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Watts, May Theilgaard

Arboretum Landscape Teaching Aid Series: A River Emerged From Under A Glacier


Identifier
3.19497
Format
black marker and watercolor on illustration board
Digitization Status
Digitized
Reproduction:
Original
Dimensions
35 cm W x 56 cm H (Item)
Extent
1 sheet
Type
Drawing
Date created
mid 20th century
Description
Primarily textual teaching aid depicting Arboretum landscape. This material shows the origin of gravel pits at the Arboretum.

Header: A RIVER EMERGED FROM UNDER A GLACIER

Text and illustrations from top to bottom:
  • [Depicted in stylized scroll with illustration of a steam shovel in gravel pit] The Record: There are several old gravel pits in the Arboretum.
  • Interpreting the record:
    • 1) A river running under a glacier is confined to a narrow channel, and is, therefore swift. Because of its swiftness it can carry gravel.
    • 2) When such a river comes out from under the ice it spreads out and slows down. Slow moving water can carry only fine material. Therefore the river dropped its heavy material.
    • 3) When men found these places they dug the gravel out.
Language
English