Zinc Bands

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An illustration of a cone shaped zinc band around the trunk of a tree to prevent cats and squirrels from climbing the tree.


Edward Howe Forbush Useful Birds and Their Protection (Boston, MA: Massachusetts State Board of Agriculture, 1907)


TIFF (full resolution)

1341×2400, 625.6 KiB

Large GIF

572×1024, 67.4 KiB

Medium GIF

357×640, 33.9 KiB

Small GIF

178×320, 12.2 KiB