CONTENTS.


Page
[Introduction]9
[Regional relations]11
[Rocky River]15
[Description of the river and its valley]15
[Relation of the valley to geologic structure]16
[Junction of Rocky and Housatonic Rivers]18
[Abnormal profile]18
[Preglacial course]20
[The buried channel]23
[Effect of glaciation]25
[The Neversink-Danbury valley]27
[Still River]30
[Statement of the problem]30
[Evidence to be expected if Still River has been reversed]31
[A valley wide throughout or broadening toward the south]32
[Tributary valleys pointing upstream]34
[The regional slope not in accord with the course of the Still]35
[Evidence of glacial filling and degrading of the river bed]36
[Glacial scouring]36
[The Still-Saugatuck divide]38
[Features of the Umpog valley]38
[The preglacial divide]42
[The Still-Croton divide]43
[Introduction]43
[Features of Still River valley west of Danbury]43
[The Still-Croton valley]44
[Glacial Lake Kanosha]45
[Divides in the highlands south of Danbury]46
[The ancient Still River]47
[Departures of Still River from its preglacial channel]48
[Suggested courses of Housatonic River]50
[Glacial deposits]53
[Beaver Brook Swamp]53
[Deposits northeast of Danbury]54
[Deposits between Beaver Brook Mountain and mouth of Still River]54
[Lakes]55
[History of the glacial deposits]56

ILLUSTRATIONS.


Page
PLATEI [View south on the Highland northeast of Neversink Pond]14
IIA.[View up the valley of Umpog Creek]40
B.[View down the valley of Umpog Creek]40
III [Limestone plain southwest of Danbury, in which are situated Lake Kanosha and the Danbury Fair Grounds]44
IVA.[View down the Housatonic Valley from a point one-half mile below Stillriver Station]52
B.[Part of the morainal ridge north of Danbury]52
VA.[Kames in Still River valley west of Brookfield Junction]54
B.[Till ridges on the western border of Still River valley, south of Brookfield]56
Page
FIGURE1.[Present drainage of the Danbury region]13
2.[Geological map of Still River valley]17
3.[Profiles of present and preglacial Rocky River]19
4.[Preglacial course of Rocky-Still River]21
5.[Diagram showing lowest rock levels in Rocky River valley]24
6.[Course of Still River]29
7.[Map of Umpog Swamp and vicinity]39
8.[Profiles of rivers]41
9.[Early Stage of Rocky-Still River]49
10.[Five suggested outlets of Housatonic River]51