APPENDIX, N" II. 
507 
their respective wharfs. The canal is to be dug 
seven feet lower than the level of the water in 
the lake, which makes all sluices, &c. un- 
necessary. 
Rivers falling into the Lake Onega. 
The Osiita, Metra, inconsiderable rivulets, 
and not navigated, but some galliots are built 
on them. 
Vitegra, described before. At present, this 
river is navigated only by 130 to ]6o vessels. 
The Marienshj Canal, when finished, will 
open a passage to many thousands. 
Andoma, not navigated, but galliots built on it. 
Vodla, the most considerable of all the rivers 
falling into the Lake Onega: it maybe called 
the source of the Stir and Neva. It had an 
immense quantity of water, but its dreadful 
cataracts render navigation absolutely im- 
possible : unless just at its estuary, it is rather 
a mighty torrent than a river. 
These difficulties did not however dis- 
courage Peter the First, who was sensible of 
the vast advantages that would accrue to the 
empire from a water communication between 
St. Petersburg and Archangel. The survey being 
made, it appeared that the easiest track was 
through the very Vodla, supposing that, by 
proper works, &c. a passage could be effected 
