Color key to the series of unfinished study of Ice Formation along Atlantic Coast. Blue shading indicates “Local formation”, Pink shading indicates ” Drifting Ice” while purple (blue+pink) shading exhibits “Local Formation and Drifting Ice.”
Photo Category: Coast and Geodetic Survey - Archive
Photo Date: 1848-1874
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| Added On | 20th October 2015 |
| Viewed | 8 viewed |