. 



MfTTHKW LIBRARY 



TABLE OF CONTENTS. 



INTRODUCTION. 



The Lower Silurian deposits of the Upper Mississippi province: A correlation of the strata Page. 

 with those in the Cincinnati, Tennessee, New York and Canadian provinces, and the 

 stratigraphic and geographic distribution of the fossils. By N. H. WINCHELL and 

 E. O. DLRICH '.!'. Ixxxiii to cxxix 



CHAPTER VI. 

 The Lower Silurian Lamellibranchiata of Minnesota. By E. O. ULRIOH 475 to 628 



CHAPTER VII. 



The Lower Silurian Ostracoda of Minnesota. By E. O. ULRICH 629 to 693 



CHAPTER VIII. 

 The Lower Silurian Trilobites of Minnesota. By JOHN M. CLARKE 694 to 759 



CHAPTER IX. 

 The Lower Silurian Cephalopoda of Minnesota. By JOHN M. CLARKE. 760 to 812 



CHAPTER X. 

 The Lower Silurian Gastropoda of Minnesota. By E. O. ULRICH and W. H. SCOFIKLD 813 to 1081 



Index cxxxi to cliv 



LIST OF PLATES AND THEIR ORDER. 



Plates 36-42. Lamellibranchiata After page 628 



Plates 43-46. Ostracoda After page 628 



Plates 47-60. Cephalopoda ..After page 812 



Plates 61-82. Gastropoda After page 1082 



LNon. Excb plate Is accompanied by H full description.] 



