-1830] 



WRITINGS OF JOSEPH HENRY. 



15 



engineers employed by the canal comniissioners to explore 

 the routes of 15 proposed canals, in 1825. 



It must be premised with regard to these heights, that as 

 they are points on routes explored for roads and canals, they 

 are the elevations of the lowest passes near the line of sur- 

 vey, and are consequently less than the general height of 

 the several ridges. 



No. I. — Table of Ascents and Descents across the Ridges from Catskill, on 

 the Hudson, to the Village of Bath, in Steuben County, and thence to 

 Lake Erie. 



Eoute. 



Miles. 



Feet. 



From the Hudson river, at Catskill, to Madi- 

 son village 



Cairo 



Shinglekill at Cairo 



Catskill mountain summit 



Valley of the Schoharie at Gilboa 



Head waters of the Delaware 



Delhi on the Delaware 



Height of land between the Delaware and Sus- 

 quehanna 



Susquehanna river at the junction of the Ole- 



out creek 



TJnadilla river one mile above its junction 



with the Susquehanna 



Between Unadilla and Chenango 



Valley of the Chenango at Oxford 



Between Chenansro and Tioughnioga or Homer 



Valley of the Tioughnioga at the junction of 

 the Otselic 



Between Tioughnioga and Owego creek 



Valley of the Owego at Eichford 



Between the Owego and the deep valley of 

 Cayuga lake 



Valley of the Cayuga lake at Ithaca 



Between the Cayuga valley and the Seneca 

 inlet at Catharine landing 



Catharine landing 



Between the Seneca valley and Mud creek, a 



branch of the Conhocton 



Valley of Mud creek one mile below Mud lake. 



Between Mud creek and Conhocton 



Conhocton valley at the village of Bath 



Between Conhocton and Canisteo 



Canisteo valley at Arkport 



Between the Canisteo and Genesee 



Genesee valley at Angelica 



Between the Genesee valley and Oil creek — 



7 

 

 13 

 10 

 10 

 18 



17 



5 

 6 

 6 



13 



4 

 11 

 11 

 24 

 34 

 44 

 62 



67 



84 



89 



95 



101 



114 



120 

 128 

 135 



139 

 149 



160 



167 



176 

 180 

 186 

 190 

 197 

 206 

 214 

 224 

 237 



rises 



rises 226 



falls 40 

 rises 1542 



falls 742 



rises 716 



falls 502 



rises 759 



falls 1148 



falls 27 



rises 657 



falls 669 



rises 133 



falls 159 



rises 445 



falls 285 



rises 275 



falls 962 



rises 849 



falls 801 



184 

 410 

 370 

 1912 

 1170 

 1886 

 1S84 



2143 



1000 



973 



1630 



96X 



1094 



935 

 1380 

 1095 



1370 

 408 



1257 

 456 



