NEW YORK. 



81 



87. The outlet of Crooked Lake from Perm Yan to Dresden is through the Genesee slate, Tully 

 limestone, and the upper part of the Hamilton all finely displayed. Crooked Lake is 20 miles long, 

 one mile wide. 100 feet deep, and its surface is 718 feet above tide water. Its northern half is divided 

 by a bluff of Portage (800 feet high) into two branches one of them 12 and the other 8 miles long. 



88. Canandaigua Lake is 14 miles long, from one to two miles wide, its surface is 668 feet above 

 tide, and its greatest depth is 100 feet, but it is very shallow at both ends. It is excavated from the 

 Hamilton and Portage groups. 



89. The drift described in note 31 extends nearly to Dresden. 



90. The fish beds are midway between Blossburg and Covington, in a cut called "Red Rock," 

 where the formation is exposed for about 200 feet in thickness. 



