PUBLICATIONS OF THE GEOLOGICAL SURVEY.

The Geological Survey was established in 1842 and ‘‘Reports
of Progress’’ were issued, generally in annual volumes, from that
date to 1885, the first report being that for the year 1843 pub-
lished in 1845. Beginning with the year 1885, ‘“‘Annual Reports”’
(new series) were published in volumes until 1905, the last being
Vol. XVI, 1904. Many of the individual reports and maps pub-
lished before 1905 were issued separately and from 1905 to the
present, all have been published as separates and no annual
volume has been issued. Since 1910, the reports have been issued
as Memoirs and Museum Bulletins, each subdivided into series,
thus :—

Memoir 41, Geological Series 38.

Memoir 54, Bzological Series 2.

Museum Bulletin 5, Geological Series 21.

Museum Bulletin 6, Anthropological Series 3.

In addition to the publications specified above, a Summary
Report is issued annually; and miscellaneous publications of
various kinds including Reports of Explorations, Guide Books,
etc., have been issued from time to time.