Produced by Charlene Taylor, Tom Cos and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) 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 Ustilagineae, 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 Algae 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.