212 The Great Pyramid in Egypt. [April, 



present day of mischievous dilapidations by travellers, a 

 very much needed confirmation of the original full depth 

 measure of the coffer. In fact, the whole structure teems, 

 not with mortuary remains, but with practical geometry : 

 for, in addition to the above, the thickness of sides and 

 bottom have been made such, that the cubic contents of the 

 bottom are half those of the sides; and the cubic content 

 of both sides and bottom together are equal to that of 

 the interior ; * or the interior is just half the exterior. 

 These proportions, however, are only obtained by theo- 

 retically filling up the said " ledge cut out ; " but being 

 so exactly obtained then, prove the said ledge to be ad- 

 ventitious. Taking the coffer, then, without that later 

 infraction into its integrity of figure, — let us enquire, what 

 determined its most important feature, — if a measurer of 

 capacity — and that by which it is so largely distinguished from 

 bond fide sarcophagi from other pyramids and neighbouring 

 tombs, — viz., its internal cubic contents ? 



This. The io 7 th part of the earth's axis of rotation — 

 cubed to represent solidity, — and then multiplied by the 

 earth's mean specific gravity 5*7, divided by 10. 



Now such io^th part amounts to 50 of the same Pyramid 

 units, whereof we took 25 in the linear investigations : 

 wherefore — 



503 x 5-7 = 71,250. 



or as close as the best measures in the same units have yet 

 made the cubic contents of the coffer to be, or rather to 

 have been, anciently. While again — 



5o 3 x 57x5 = 3,562,500, 

 or the cubic contents, within a few inches, similarly measured, 

 of the marked off portion of the lowest granite course of 

 the chamber walls holding the said coffer. 



The number 50, then, plays a very important part in this 

 investigation ; and appears here first, in terms of previously 

 known linear Pyramid units, whereof 500 millions make the 

 length of the whole axis of rotation of the earth. Now the 

 chamber itself contains, or is made up of, as to its walls, 

 5 grand, even, regular courses of polished red granite, 

 which courses run round and round the room in uninterrupted 

 horizontal lines of remarkable mechanical perfection, — 

 while the physical nature of their surfaces, glittering, 

 characteristically for granite, with innumerable distinct 



* See " Antiquity of Intelle&ual Man," pp. 295 to 301 ; also Mr. Henry 

 jPerigal's published '.' Original Dimensions of the Goffer." 



