76 Mr. Bevan’s observations on the heights of places 
Grand Junction Canal, I have been at the trouble of levelling 
from the following stations, viz. 
Wendover Down, 
Kens worth, 
Bowbrick Hill, and 
Arbury Hill, 
to the nearest point of the said Canal, and thus, by means of 
the known level of the different parts of the Canal, to obtain 
the relative heights of the above mentioned stations. 
And as a comparison will be more readily made from a 
table of heights expressed in positive numbers, I shall assume 
the highest point of the summit of said Canal to be 402 feet 
above the level of the sea, at low water spring tides ; with 
this assumption, the heights of the several stations, in feet, 
above low water mark, will be as follows : 
Wendover Station - - - - 861 
Kens worth ditto - - - - 809-5- 
Bowbrick Hill - - - - - 571-f- 
Arbury Hill - - - - - - 740-5- 
The heights of these Stations published in the Philosophical 
Transactions, are as below : in Vol. 3, page 302. 
Wendover — _____ 9 05 
Kensworth ------ 904 
Bowbrick Hill - - - -6 83 
Arbury Hill - - - -- -804 
these will average about 78 feet higher than in the table 
above. 
I have also levelled from the summit of the Regent’s Canal, 
to the mouth of the fixed cannon at King’s Arbour, or the 
upper end of the base on Hounslow Heath, and upon the 
same data this point will be 90 J feet above low water mark. 
