LIST OF PLATES. 



OPPOSITE 

 PLATE. PAGE 



I. — Map of the Lake Shore of Erie Coiiiity, N. Y title-page 



(Compiled). 



IL — Topographical Map of Eighteen Mile Creek i. 



(From a compass survey by Philip L. Grabaii). 



III. — Two views of Sections in the upper part of the gorge of 



Eighteen Mile Creek 1 



(Photographed by the atithor). 



IV. — View of Section 1, at the Stone Bridge -A 



(Photographed bj- Prof I. P. Bishop). 



V. — a. View of a part of Section 1 > 



h. View of the lower end of Section 2 / 



(Photographed by the author). 



VI. — View of the lower end of Section 3 22 



(Photographed by the author). 



VII. — a. View of the upper end of Section 4 j 



b. View of a portion of the Genesee Shales of Section 4 f 



(Photographed by the author). 



VIII. — View of the upper end of Section 5 28 



(Photographed by Prof I. P. Bishop). 



IX.— View of Section 5 32 



(Photographed by Prof. I. P. Bishop). 



X. — View of the " Corry " in Section 7 34 



(Photographed by the author). 



XI. — a. View of Section 6 > 



35 

 h. View of the Encrinal limestone of Section 6 ( 



(Photographed by the author). 



XII. — View of Section 7, looking up-stream 37 



(Photographed by Prof I. P. Bishop). 



XIII. — View of Section 7, looking down stream 38 



(Photographed by Prof I. P. Bishop). 



XIV. — View of Section 8, looking down stream 40 



(Photographed by Prof. I. P. Bishop). 



XV.— View of the first Section of the South Shore Cliffs, looking 



south from the mouth of Eighteen Mile Creek 46 



(Photographed by Prof. I. P. Bishop). 



