CONTENTS. 



Page 



Introduction 9 



Regional relations 1 1 



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 r. 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 



