110 Notice of some New Electrical Instruments. 
No. 6.—The French Creek division, connects the Conneaut Lake 
with the Allegheny River at the mouth of French Creek, and passes 
through Crawford, Mercer and Venango. Length 454 miles. Lock- 
age 1284 feet by 21 locks, of which 17 are lift locks. Dimensions 
18 by 90 feet in the chamber, except the outlet lock at Franklin which 
is 22 by 120 feet. 
The aggregate length of the Branch Canals is 3114 miles exclu- 
sive of all side cuts. ‘The lockage is 745 feet; making, when add- 
ed to the main line, 587 miles of canals, with 1923 feet of lockage. 
The total length of canals and rail roads constructed by the state, 
is 706% miles, overcoming 5339 feet of rise and fall. 
Most of these works are completed, and it is confidently expected, 
that all will be finished at an early period next season. The limits 
which | have prescribed to myself, do not permit me at present to ex- 
plain and account for the difficulties which have been encountered 
in their construction. ‘They may be inferred from the fact, that the 
appropriations for the works which I have described have already ex- 
ceeded $18,000,000. 
] have now done with the dry details of compilation. When I 
commenced them, I expressed a belief that her sister states were 
hardly aware of what Pennsylvania has been doing. She has moved 
onward in her course, with that quiet determination which always 
marks extraordinary strength, and without appealing to foreign aid, 
has triumphed by the energy and resources of her own citizens. Nor 
have Pennsylvanians been content with those works alone which have 
been constructed by state authority. ‘The Schuylkill, Union and Le- 
high Canals, and the almost innumerable rail roads which traverse the 
eastern part of Pennsylvania, testify that the difficulties interposed by 
our rugged mountains, have only acted as incentives in the pursuit of 
wealth and power. 
Arr. XVIII.—Wotice of some New Electrical Instruments ; invented 
by Cuarues G. Pacer, Student in Medicine. 
TO THE EDITOR. 
Dear Sir.—I_ offer for your Journal a description of an electric 
syringe, which if it does not prove a useful instrument to the electri- 
cian, will perhaps afford him some amusement. A rough drawing 
of it will serve to explain it better than a bare description. 
