OF THE GREAT PYRAMID. 



697 



the space of 44-8 inches may be considered very close to the true transverse 

 height, and becomes, under the angle of 26° 18', = 50 inches. In a similar 

 manner the height of the Grand Gallery, given by various observers, without 

 much specification, as anywhere between 270 and 360 inches, may be concluded 

 equal to 314 of transverse, and 350 of vertical height. The Grand Gallery then, 

 is seven times the height of a small gallery, similarly inclined ; and is constructed 

 in integral terms of both the scientific standard of the Pyramid, and the sacred 

 standard of the Jews. The only question, therefore, now to settle, is, what does 

 the larger linear standard of the Pyramid,— which has already had its metrical 

 character and proportions settled in a manner that requires no repetition, — 

 signify when in such a position ? 



To this end, recourse may be had to our diagram, Plate XXVI. fig. 6, repre- 

 senting the passages in the Northern lower half, of the Meridian section through 

 the Great Pyramid, according to the hypothesis partly given in Plate XXIII. fig. 

 3 ; the data therefore stand thus — 



Semi-base breadth of Pyramid, 

 Height of Pyramid, 

 Semi- side of small area-square, 

 One-half semi-side, ,, 



One-third semi-side, „ 



Angle of lower culmination of old Pole-star, 

 Place of Pole at Pyramid, 

 Upper culmination of old Pole-star, 

 Angle of Equator at the Pyramid, 



26° 18' tangent of, with radius of 915, 



30 



33 42 



Transverse height of small passage, 



91-5 Metrons. 

 116-5 

 51-624 „ 

 25-812 „ 

 17-208 „ 



26° 

 30 

 33 

 60 



18' 

 



42 

 



45-222 

 52-828 

 61023 

 44-8 inches. 



Of all these data, the last and the two first are the only ones derived from the 

 Pyramid itself, by measure of observers ; all the rest being conclusions from the 

 theoretical Pyramid, confirmed, however, more or less by reference to measure, 

 and produced in the first instance for the extremely different questions discussed 

 in the earlier sections of the paper. 



It wll be seen then, on inspecting the diagram, that the increased height 

 given to the Grand Gallery over an ordinary small passage, depends entirely upon 

 Latitude and pole-star-angles, into the size of the Pyramid ; and comes out, as 

 mentioned above, 7 times the breadth of a small passage. In the next place, at 

 the lower Northern entrance point, D, into said Grand Gallery, there is a remark- 

 able meeting together of three passage lines, and four astronomical lines ; which 

 all intersect there within the l^readth of a pen's stroke : constituting it the most 

 important point, both theoretical and practical in the whole Pyramid. And 

 amongst these lines, the Equator-tine of the Pyramid enters the Grand Gallery, 

 and makes it, as it were, peculiarly its own ; i.e.^ makes it the Equatorial and 



