State of Connecticut
State Geological and Natural History Survey
Bulletin No. 30

Drainage Modifications and Glaciation
in the Danbury Region
Connecticut

By

RUTH SAWYER HARVEY, Ph. D.

HARTFORD

Published by the State

1920

BULLETINS

OF THE

State Geological and Natural History Survey
of Connecticut.

1. First Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1903-1904.
2. A Preliminary Report on the Protozoa of the Fresh Waters of Connecticut: by Herbert William Conn. (Out of print. To be obtained only in Vol. I, containing Bulletins 1-5. Price $1.50, postpaid.)
3. A Preliminary Report on the Hymeniales of Connecticut: by Edward Albert White.
4. The Clays and Clay Industries of Connecticut: by Gerald Francis Loughlin.
5. The Ustilagine? or Smuts, of Connecticut: by George Perkins Clinton.
6. Manual of the Geology of Connecticut: by William North Rice and Herbert Ernest Gregory. (Out of print. To be obtained only in Vol. II, containing Bulletins 6-12. Price $2.45, postpaid.)
7. Preliminary Geological Map of Connecticut: by Herbert Ernest Gregory and Henry Hollister Robinson.
8. Bibliography of Connecticut Geology: by Herbert Ernest Gregory.
9. Second Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1905-1906.
10. A Preliminary Report on the Alg?of the Fresh Waters of Connecticut: by Herbert William Conn and Lucia Washburn (Hazen) Webster.
11. The Bryophytes of Connecticut: by Alexander William Evans and George Elwood Nichols.
12. Third Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1907-1908.
13. The Lithology of Connecticut: by Joseph Barrell and Gerald Francis Loughlin.
14. Catalogue of the Flowering Plants and Ferns of Connecticut growing without cultivation: by a Committee of the Connecticut Botanical Society.
15. Second Report on the Hymeniales of Connecticut: by Edward Albert White.
16. Guide to the Insects of Connecticut: prepared under the direction of Wilton Everett Britton. Part I. General Introduction: by Wilton Everett Britton. Part II. The Euplexoptera and Orthoptera of Connecticut: by Benjamin Hovey Walden.
17. Fourth Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1909-1910.
18. Triassic Fishes of Connecticut: by Charles Rochester Eastman.
19. Echinoderms of Connecticut: by Wesley Roscoe Coe.
20. The Birds of Connecticut: by John Hall Sage and Louis Bennett Bishop, assisted by Walter Parks Bliss.
21. Fifth Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1911-1912.
22. Guide to the Insects of Connecticut: prepared under the direction of Wilton Everett Britton. Part III. The Hymenoptera, or Wasp-like Insects, of Connecticut: by Henry Lorenz Viereck, with the collaboration of Alexander Dyer MacGillivray, Charles Thomas Brues, William Morton Wheeler, and Sievert Allen Rohwer.
23. Central Connecticut in the Geologic Past: by Joseph Barrell.
24. Triassic Life of the Connecticut Valley: by Richard Swann Lull.
25. Sixth Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1913-1914.
26. The Arthrostraca of Connecticut: by Beverly Waugh Kunkel.
27. Seventh Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1915-1916.
28. Eighth Biennial Report of the Commissioners of the State Geological and Natural History Survey, 1917-1918.
29. The Quaternary Geology of the New Haven Region, Connecticut: by Freeman Ward, Ph.D.
30. Drainage, Modification and Glaciation in the Danbury Region, Connecticut: by Ruth Sawyer Harvey, Ph.D.
31. Check List of the Insects of Connecticut: by Wilton Everett Britton, Ph.D. (In press.)

Bulletins 1, 9, 12, 17, 21, 25, 27, and 28 are merely administrative reports containing no scientific matter. The other bulletins may be classified as follows:

Geology: Bulletins 4, 6, 7, 8, 13, 18, 23, 24, 29, 36.

Botany: Bulletins 3, 5, 10, 11, 14, 15.

Zoölogy: Bulletins 2, 16, 19, 20, 22, 26, 31.

These bulletins are sold and otherwise distributed by the State Librarian. Postage, when bulletins are sent by mail, is as follows:

The prices when the bulletins are sold are as follows, postpaid: