This is one of the earliest comprehensive geologic reports of Nantucket, with detail on geologic history, surficial deposits, coastline and beaches. Included in the report are nine plates and a folding map entitled Map of the Island of Nantucket Showing the Distribution of Glacial and Post-Glacial Deposits (10 x 5.5"). The attractive map shows four different geologic units depicting kame and maraine, frontal terrace, post-glacial deposits and swamps. The map was completed by N.S. Shaler. 54 pp. of text enclosed in blue paper wrappers.

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Condition: A

Map is near fine with very faint color offsetting. Text and plates are very good with light toning. The spine is perished.