[ 32 ] 62 
month; but it is »ot stated if they were taken at the lowest stage of 
those stieams. If so, this quantity would be sufficient for a canal 60 
feet wide at its ufjper surface, 30 at bottom, and 8 feet deep, on 30 or 
40 miles of lengtli. But, to ascertain, so as to leave no doubt on the 
subject, the exact quantity which those streams can supply, is an in- 
disiH'iisable preliminary operation to decide whether it will not be ne- 
cessary to have recourse to the waters of the Delaware in order to 
feed the canal — and supposing it was not found ncccessary, we should 
Ktill conjpare, on the other side, the expense of purchasing the mill sites 
of these rivers, and the loss which their suppression would occasion; 
and, on the other side, the cost of a navigable feeder descending from 
the Delaware, balanced with the advantages which it would add to 
tiic revenue of the canal. 
If this feeder began at the rapids of the Delaware, above Tumbling 
dam, tl»at river miglit supply the canal with all the water which it 
required. This spot is 90 feet above the level of the stream at Tren- 
ton from Judge Gordon's levels, and 28 or £9 feet above the line of 
water of the canal; the localities are favorable for the construction of 
a wing-dam, and the navigable feeder would run tx>r 23 or 30 miles 
in length, through a giound v»hich would oppose no serious obstacle 
to its course. Supposing the canal terminated in the valley of Con- 
wick's creek, this feeder might supply a branch, opening a commu- 
nication between Trenton and the canal. It is needless to add, that, 
as it would enter tiie canal at its western extremity, it would be ne- 
cessary to give to the bottom of that canal a slope from west to east, 
sufficient to make its waters How freely at the end opposite to that 
which receives the feeder. 
As to the dimensions of the canal, we have supposed tjiat its depth 
would be at least 8 feet, and that it should be navigable for bay ves- 
sels — otherwise, the noble line of interior navigation running parallel 
to tlie coast, and which is contemplated from Georgia to Massachu- 
setts, would here be interrupted. In a national point of view, it is there- 
fore very desirable, that the Delaware and Raritan Canal, which, he- 
aides, communicates between two such cities as IS'ew York and IMiil- 
adelphia, should receive the same profile adopted for the Chesapeake 
and Delaware Canal, l)y the high spirited gentlemen, engaged now 
in that great work {1-) 
BAR:< STABLE AND HYANNIS HARBOR CANAL. 
The northern termination of this canal opens in Barnstable har- 
bour, and its southern termination in Hyannis harbour. Its object 
is to provide a passage through tlie isthmus of Cape Cod, in order 
1 hat the coasting trade may avoid doubling that cape. 
(1.) This c:.hA\ will be 60 feet wide at tlie water's line, Jo at the bottom, 8 feet 
■ lecM. l~ iiiik'S lunaC; asirl '.•> V.wd villi stcM-t^ 
