124 
Mr. Weaver on the 
Authorities . 
Dr. Fitton. 
Feet. 
Mr. R. Griffith, 
junr. 
Above low water- 
mark in Dublin Bay. 
Feet. 
Lugnaquilla I 
Tonelagee . . 
Comaderry . . 
Cadeen . . . 
Spynan’s hill . 
Eadestown hill 
Brisselstown hill 
Kilranela hill . 
Baltinglass hill 
Howth . . . 
3045 
2148.9 
1339.4 
1330.1 
1295.5 
1271.8 * * * § 
578 $ 
3070 
2696 
2268 
2158 
1351 
*1292 ’ 
1273 1 
Garrycastle . . . 
Three Rock Mountain 
Head of Kippure 
Great Sugar Loaf 
Lower Lough Bray . 
Barracks at Glencree 
Dr. Fitton and the Author 
1869.7 .... 
1585,9 § .... 
Dr. Taylor and the Author 
2527 .... 
2004 .... 
1492 .... 
1395 || .... 
* The preceding heights, referred to Dr. Fitton’s authority, were ascertained in the fol- 
lowing manner. To the elevation above Mr. Greene’s house, (given by Dr. F. in his 
publication of Mr. Stephens’s Notes on the Mineralogy of the vicinity of Dublin, p. 44)* 
are added 193 feet, the elevation of that house above the Slaney under Tuckmill bridge, 
as determined by Mr. Richard Griffith, jun. together with 397 feet, the elevation of the 
Slaney at that point above low water-mark in Dublin Bay, as ascertained by the levels 
taken for the extension of the Grand Canal into the county of Wicklow, the summit level 
of which, Mr. Killaly informs me, would be 430 feet above- low water-mark, and 26 miles 
in length, passing through the town of Baltinglass a little below the chapel. 
+ See the Fourth Report of the Commissioners on the Bogs of Ireland. Appendix, 
No. 10. 
£ That is 567 feet above high water-mark, to which I have added 11 feet, as the 
average rise of the tides in Dublin Bay, the spring tides being 14 feet, and the neap tides 
8 feet. 
§ Deduced from my having ascertained Ballinteir to be 338 feet above low water-mark, 
to which is added the elevation found by Dr. Fitfon above the former place. 
|| Deduced from my having determined No. 27 Lower Baggot Street, Dublin, to be 57 
feet above low water-mark, to which is added the elevation found by Dr. Taylor above the 
former place. 
