BOOK XI 



493 



Six long walls : A — The first. B — The first part of the second. C — The 



FURTHER PART OF THE SECOND. D THE THIRD. E THE FOURTH. F ThE FIFTH. 



G^The SIXTH. Fourteen transverse walls : H — The first. I — The second. 



K — The third. L — The fourth. M — The fifth. N — The sixth. — The seventh. 



P — The eighth. Q — The ninth. R — The tenth. S^The eleventh. T — The 



twelfth. V — The thirteenth, X — The fourteenth. 



