of Edinburgh, Session 1870-71. 
43 J 
Y = 
a.h. 
where a = area of base, 
and h = height of pyramid. 
But in the purely mathematical form of pyramid we are led to 
consider 
a 
7T R* 
//. = R^ = — = ^ , when V would equal : but in a sphere, 
volume 
7 T 
B 3 
3 
So that in the case of the great hemispherical molten sea, whose 
content = 50 lavers, a pyramid of the same base and height would 
contain 25 lavers, 100 homers, or five of the largest marked-off 
space in the antechamber whose content has already been pointed 
out. 
This may certainly lead us to infer, that as up to the ante¬ 
chamber our measures have been lineal and superficial; now, on 
the other hand, we must be prepared for cubical measures with, 
perhaps, also some concerning the content of spheres, cones, or 
pyramids. 
Commencing our investigation at the horizontal marked plane 
previously referred to, we remember in its most highly finished por- 
i ion tliat its smallest dimensions are 79 0 B. I. and 4P2 B. I., and 
s 79 0 B.T.n 
here we may notice that their sum ( 41 - 2 j , 120 - 2 B.I. oi 
\mT-2 b.i J 
120 1 P.I. is very close upon the radius of the hemisphere that 
7r 
the presence of rr has led us to refer to. The precise figures stand- 
o 
ino- thus :— 
o 
Radius of \ sphere whose volume = 3,562,500 P.I. (= lower course 
of King’s Chamber = Molten Sea”) is 119 371 P.I. 
When vol ume of sphere = 3562500 x 2 cubic inches 
