A part of the edition of these Bulletins have been assembled in volumes substantially bound in cloth, plainly lettered, and sell for the following prices, postpaid:

It is intended to follow a liberal policy in gratuitously distributing these publications to public libraries, colleges, and scientific institutions, and to scientific men, teachers, and others who require particular bulletins for their work, especially to those who are citizens of Connecticut.

Applications or inquiries should be addressed to

George S. Godard,
State Librarian,
Hartford, Conn.

In addition to the bulletins above named, published by the State survey, attention is called to three publications of the United States Geological Survey prepared in co-operation with the Geological and Natural Survey of Connecticut. These are the following:

These papers may be obtained from the Director of the United States Geological Survey at Washington.

CATALOGUE SLIPS.

Connecticut. State geological and natural history survey.

Bulletin no. 30. Drainage Modifications and Glaciation in the Danbury Region, Connecticut. By Ruth S. Harvey, Ph.D. Hartford, 1920.

59 pp., 5 pls., 10 fig., 25^cm.

Harvey, Ruth Sawyer, Ph.D.

Drainage Modification and Glaciation in the Danbury Region, Connecticut. By Ruth S. Harvey, Ph.D. Hartford, 1920.

59 pp., 5 pls., 10 figs., 25^cm.

Geology.

Harvey, Ruth S. Drainage Modifications and Glaciation in the Danbury Region, Connecticut. Hartford, 1920.

59 pp., 5 pls., 10 figs., 25^cm.

State Geological and Natural History Survey

COMMISSIONERS

Marcus H. Holcomb, Governor of Connecticut
Arthur Twining Hadley, President of Yale University
William Arnold Shanklin, President of Wesleyan University
Remsen Brickerhoff Ogilby, President of Trinity College
Charles Lewis Beach, President of Connecticut Agricultural College
Benjamin Tinkham Marshall, President of Connecticut College for Women

SUPERINTENDENT

Herbert E. Gregory

Publication Approved by the Board of Control

CONTENTS.