482 Col. H. Vyse and Sir John F. W. Herschel on the 



building was regulated by it; but for the reasons already stated, 

 it could not have been used for celestial observation. The 

 coincidence of the relative position of a Draconis with the sup- 

 posed date of the pyramid is at all events very remarkable. 

 A Table showing the exterior angles of the buildings, the incli- 

 nations and proportions of the inclined passages, and also 

 the dimensions of the sarcophagi, that have been found hi the 

 nine existing Pyramids at Gizeh*. 



The base of the Great Pyramid was above high Nile, in 

 1837, 138 ft. 9 in. 



The base of the Second is above the base of the Great Py- 

 ramid 33 ft. 2 in. 



The base of the Third is above the base of the Great Pyra- 

 mid 41 ft. 7 in. 



The base of the three pyramids, south of the Third, are lower 

 than the base of the Third 1 6 ft. 8 in. 



The bases of the three pyramids east of the Great Pyramid, 

 appear to be on a level with it. 



The Second Pyramid is about 400 ft. to the south of the 

 Great Pyramid. 



The Third Pyramid is about 750 ft. to the south of the 

 Second. 



Sir John HerscheVs Observations on the Entrance Passages in 

 the Pyramids of Gizeh. 

 Four thousand years ago the present polar star, a Ursa3 



* The three pyramids of Abonseir are situated about seven miles to the 

 south-eastward from Gizeh, on a ridge about eighty feet above the plain. 

 The angle of building of the northern is 51° 35'; that of the descending 

 passage in the northern front 27° 5'. The angle of building of the middle 

 pyramid, and that of the entrance, could not be ascertained on account of 

 its dilapidated state. The angle of building of the southern pyramid was 

 not discovered, but that of the entrance was 26°. 



