BABBAGE ON THE TEMPLE OF SERAPIS. 217 



No. 5. Description of the Plates. 



Plate 1. — View of the Temple of Serapis, 



I am indebted to the kindness of Mr. Edward I. Anson, Jun., for 

 this excellent representation of the temple. It was taken by means 

 of the Camera Lucida in 1836, and may, I believe, be relied upon 

 even to the minutest details. 



Plate II. — Section of the Temple of Serapis, showing the changes 

 it has undergone. 



I deduced this section from a series of measures made at the temple 

 in June 1828, in company with my friend Mr. Head. Several days 

 were occupied, and some important questions were discussed on the 

 spot. Mr. Head also entered into the antiquarian questions, which, 

 if they had been admissible into these transactions, would have added 

 greatly to the interest of the story of the temple of Serapis. 



Paragraphs where 

 referred to. 



A At bottom on right-hand pavement of ancient temple 43, 55 



BB Line of low water of the Mediterranean, June 1828 



CC Line of high water ditto 



DD Level of the top of mixed sea and fresh-water lake 34, 35, 36 



Dark deposit below that line 56 to 64 



EE Irregular line representing the first filling up of the 



temple 64, 67 



This filling up reaches from the bottom to EE. 



FF Level of the top of fresh-water lake 37, 64 



GG Irregular line of second filling up. The other boun- 

 dary of this filling up is EE. 



HH Highest level attained by the sea 77 



1 1 Irregular surface of the soil out of which the temple 



was dug in 1750. 

 1 1 and GG are the two boundaries of the third filling up. 



The sketch of the bank and wall M on the left side is accurate 

 where measures are given, but in other respects it must not be con- 

 sidered as rigidly correct. 



