Roy. Soc.Edm^ Vol. XXIII. 



Tlaie XXIV. 



see p.p. 677, 678, 681, 687. 



7^. 4. 



lew Vile level, 1839. L 



1000 \ 100 



ScaZt' of TyroJitiA Jnihts. 



woo 2000 3000 JfOOO ' 5000 8000 



± 



± 



8000 /9000 



ScaZey of MeiroTLS . 



aJ ' Ki/w's Chamber, 

 i = ([u^efvs Cfutmber. 

 o = Subtfrrcunean/ Oiamier . 



MERIDIAN SECTION OF GREAT PYRAMID, 



after HOWARD VYSE, 



With tlie principal liypothetical lines of Fi^. 3. marked m dots 



i 



0k 



