INTRODUCTION 



Crown Point has long been known as a region of great geo- 

 logical, as well as historical interest. Many writers have spoken 

 of the opportunities there afforded for studying the Ordivician 

 and its charac5leristic fossils. For this reason, the Cornell Sum- 

 mer School of Field Geology has made it a stopping place on its 

 Champlain trip for the past two years, and, during a stay of sev- 

 eral da3-s in the summer of igoi, the following detailed section 

 was made. The collecfting from the Chazy and Black River lime- 

 stones was done by J. Pacheco, C. U. '03, and the writer. The 

 Trenton was worked by C. E. Smith, Graduate, T. Wilson, '02, 

 and C. H. Presho, '03, the first two gentlemen completing the 

 identification for the faunal lists of that part. The maps and 

 plates are the work of Prof. G. D. Harris, to whom many thanks 

 are due for favors in connection with the work and publication. 



The peninsula of Crown Point, or Long Point, as it is called 

 locally, juts out into Lake Champlain about five miles north of the 

 village of the same name in Essex County, N. Y. It is approxi- 

 mately a recflangle, two and a half by one mile, bounded on the 

 north and east b}- the lake and on the west by Bulvvagga Bay. 

 The whole point is low and nearly level. The highest part 

 is at the northern end, where the ruins of the old Engli.sh fort 

 of Crown Point (built 1750) stand. The underlying rock is ex- 

 posed frequently along the whole shoreline, and ledges often 



