128 
Mr. Weaver on the 
A Table exhibiting the levels of the Tract occupied by Fleet % Limestone , 
in the interior of Ireland . 
No. 
1 . 
2 . 
3. 
4. 
5. 
6 . 
7 . 
8 . 
9. 
10 . 
11 . 
12 . 
Grand Canal , summit level ; beginning"’! 
at 17 miles distance from Dublin, and V 
continued 4 miles . . . 
Grand Canal , at its junction with the"! 
Shannon at the mouth of the river > 
Brusna . . . . • J 
Royal Canal , summit level; beginnings 
at 29 miles distance from Dublin, and > 
continued 17 miles . . • J 
Royal Canal, junction with the Shannon \ 
at Tarmonbarry . . . . J 
Lough Allen, f surface 
Lough Ree , at the entrance of the Shannon 
Portumna Bridge • . . 
Barrow river, at Monastereven 
Barrow at Carlow, to high water mark 
below New Ross J . . . j 
Ditto . . to ditto in Dublin bay 
Line of 12 miles, between the 36th Lock 
of the Grand Canal and Lough Ree ; 
being the summit level of a projected 
extension of this Canal 
Line of 24 miles, between Roscrea and 
Cashel ; being the summit level of a 
projected extension of the Grand 
Canal from Monastereven to Roscrea 
and Carrick-on-Suire 
Grand Canal at Philipstown 
Heights 
above high 
watermark 
in Dublin 
bay.* 
Authorities. 
feet. in. 
264 — 
f Grand Canal Com- 
\ pany. 
104 — 
ditto. 
308 — 
f DireetorsGeneralof 
\ InlandNavigatioji. 
113 — 
Mr. Killaly 
146 — 
109 — 
89 — 
181 2\ 
152 — 
152 — 
ditto. 
ditto. 
ditto. 
f Grand Canal Com- 
l ■ P an J- . . 
f Barrow Navigation 
\ Company. 
t Grand Canal Com- 
\ pany. 
242 — 
Mr. Killaly. 
39S 6 
f Directors General 
< of Inland Navi- 
k gation. 
248 — 
Mr. Killaly. 
* The rise of the tides being upon an average 11 feet. 
+ Lough Allen does not come within the tract represented in the Map. It is situate in 
the county of Leitrim, surrounded by a Coal Tract, which extends into Fermanagh, Sligo, 
and Roscommon, and reposes on floetz limestone. 
$ The rise of the tides below New Ross is upon an average 10 feet, the spring tides 
being 14 feet and the neap tides 6 feet. 
