398 



HEIGHT OF THE WORCESTERSHIRE BEACON. 



PRELIMINARY OBSERVATIONS, MADE MAY 30th, 1834. 



First Series. 



AUGUST 9th, 1834. 



Second Series. 



Taking the first series of observations, and proceeding according 

 to Maskelyne's process — we obtain 921 feet as the height of the 

 Worcestershire Beacon. — ^Thus — 



1. Barometer atthe") 

 two Stations. J 



Logarithm. 

 29,703 — 4728003 

 28.700 — 4578819 



— diff. 149.184 

 2. Temperature at the two Stations. 64 and 53, diff. 11 ° « 0.454 = 4.994 



Approximate height in Fathoms, 144.190 



/s,** Second Edition, viz. that for the Expansion of Mercury, and the mean 

 dilatation of Glass, p. 372. Table oi Expansion of Air for Temperature, p. 177. 

 Table of Expansion of Air for Vapour, p. 177. Table of Increase of Density of 

 Air for Vapour, p. 177. 



