330 
Proceedings of the Royal Society 
its ledge is filled up, and only then) a certain inter-commensura- 
bility of parts ; and which is not known to prevail in any Egyptian 
sarcophagus, or to be now, or ever to have been, a necessary prin- 
ciple amongst makers of mere coffins anywhere. 
The first of these commensurabilities is, — that within the limits 
of errors of measure, the inside contents of the vessel are just half 
those of the outside (as per model shown at the meeting). 
And the second is, that the cubical contents of the bottom are 
similarly half those of the sides (as per model). 
But these distinct proportions would not have obtained within 
many hundreds of cubic inches, if the recently detected hollowing 
of some of the sides of the coffer had not been performed of old. 
So much pains do indeed seem to have been taken in that matter 
at the primeval coffer, that we may be justified in adding beneath 
our first quantity in the numerical table, half the observed con- 
tents of the outside of the coffer, = 71,160 ;* and the sum of the 
walls and floor, obtained chiefly by separate measures, and = 
71,266, on a principle discovered by Mr Henry Perigal. 
These results are beginning to look close : and although the Pro- 
ceedings' author would vitiate them utterly, by insinuating that I 
have measured them from what he stigmatises as an “imaginary 
“ higher brim” (p. 252), — yet I point on this plate of my published 
book, “ Life and Work” (vol. i. frontispiece), and also on this 
model, to the still remaining traces of the actual and ancient top 
* Table of Coffer — 
Measures above referred to, all expressed in Pyramid inches. 
Number 
of 
Method. 
Nature 
of 
Method. 
Numerical materials employed. 
Cubic Contents 
of 
Interior of Coffer. 
■{ 
By direct 
measures of 
interior, 
j> [77-85 X 26-70 X 34‘31 = 
71,317- 
2 { 
By half the 
exterior 
measures, 
) 89-62 x 38-61 X 41’13 
) 2 
71,160- 
3 i 
By contents 
of bottom and 
sides, 
) 89-62X38-61X6-866 = 23,758- ) 
J 2 (89-62 + 26-70) X34-31X5-952 = 47,508- f 
71,266- 
• 1 
By new depth 
derived from 
ledge frame, 
j> 77-85 X 26-70 X 34‘282 = 
71,258- 
Mean 
= 71,250- 
