CONTENTS 



Introduction 41 



Topographic work 41 



Topography 41 



Description of rocks of Hoosac mountain 44 



The Stamford gneiss 45 



The Vermont formation. 48 



The Hoosac schist 59 



The Stoekbridge limestone 64 



Amphiholites 65 



Geology 69 



The Hoosac tunnel 69 



The region embracing the central part of Hoosac mountain 72 



The northern and eastern schist area 86 



The region south of Cheshire and of the Hoosic valley 88 



Hoosic valley schist 97 



The region around Clarksburg mountain and Stamford, Vermont 98 



General conclusions 102 



Descriptions of plates 109 



37 



