1894- I PLANTS OF MONROE COUNTY. 31 



Western New York and Pennsylvania Railroad : 



Feet. Feet. 



Rochester,. 511 Honeoye Junction. . . . 537 



Rapids. -. -. 525 Avon 543 



Severance... 533 Fowlerville. 561 



Scottsville 541 York 561 



MISCELLANEOUS HEIGHTS. 



Feet. 



"Ridge Road" across Monroe county (Iroquois beach). 430 to 440 



Turk hill station U. S. Lake Survey 928 



Hart hill (town of Rush) station U. S. Lake Survey 792 



Pinnacle hill station U. S. Lake Survey . . 7 49 



Hopper hill (town of Victor, Ontario county) . (aneroid) 1 13 1 -f- 



" Pinnacle Hills:" 



Cobb's hill 663 



Pinnacle summit 749 



Mount Hope reservoir (water surface) 634 



Memorial Pavilion - 650 



Summits of Mount Hope cemetery 650 to 670 



Rochester : 



" Four Corners," Main and State streets 499 



East Main street and East avenue . 534 



Campus of University of Rochester. . 516 



geology. 



Stratigraphy. — The hard-rock geology of western New York was 

 fully described over half a century ago by Dr. James Hall.* The 

 section of strata in the region under immediate consideration has 

 been recently published in these Proceedings,! while an excellent 

 description of the strata above the Salina group may be found in the 

 47th Report of the New York State Museum, 1894. \ 



The geological structure of the region is exceedingly simple. 

 The strata lie nearly horizontal, without serious disturbance or visible 

 faulting. While there has been some movement and warping of the 



*"The Natural History of New York. Part IV, Geology of the Fourth District." 



t"A Section of the Strata at Rochester, N. Y., as shown by a deep boring."' By H. L. Fair- 

 child, Proc. Roch. Acad, of Science, Vol. I, pp. 182-186, 1891. 



"The Thickness of the Devonian and the Silurian Rocks of Western New York; approxi- 

 mately along the line of the Genesee River." By Charles S. Prosser, Proc. Roch. Acad. Science, 

 Vol. II, pp. 49-104, 1892. 



"The Geological History of Rochester, N. Y." By H. L. Fairchild, Proc. Roch. Acad. 

 Science, Vol. II, pp. 215-223, 1893. 



$" Report on the Geology of the Livonia Salt Shaft," By D, D. Luther. 



