H. L. Smith— Queen's Chamber in the Great Pyramid. 3829 
simply that divisions of 5* and 10s characterize the pyramid 
185-0388 x 10 x 2 = 5812-978 pyr. inches. 
But 5818 in. is the most recent and accurate determination of 
the height of the great pyramid adopted by Prof. Smyth after 
diligent comparison ; it is equal to 5819 Br. inches nearly. 
At a height of about 40 inches above the floor, in the first 
compartment of the niche, is a bank or shelf L’L”, and while 
the main portion of the niche is 40 in. deep, this is about 100 
in. in depth; the line 6JD gives its height approximately ; it 
was not measured carefully by Prof. Smyth. 
Taking the height at 39-71 inches, we have, for the height 
of the niche above this shelf, 145°32 inches. 
Now 145°32 x 10 x w= 45655, 
but this is half the base length of the pyramid, according to the 
most accurate determinations, viz: 9181 pyr. in. or 9140 Br. in. 
e have then, in these two portions of the niche, 
18508 : 145-3: : height of pyramid : half base of do. 
-this for the base of the pyramid, the line K’L will represent 
Ohuin bet given by Prof. 
above the base, on the hypothesis that t 
the pyramid at this height is half the area o 
ed by us, the vertex of the 
erection; this height was estimated by Mr. Perring at 1767 in. 
~ 130°5 inches, and 130° 
nt builders 
at least 1n 
E. Lane. M. Jomard. 
Br. 
©. Piazzi Smyth. H. Vyse. = 
Length, 226-7 "025 228 928.13 
Breadth, 205°8 204 204 205°72 
Height to roof, 182°4 177 162 162°01 
