BOOK XI. 



493 



ay» 

 «»4 



f»9 



tse 



144 



UO' 



leS 



jC 



84 



71 

 Co 



48 



3^ 



44 



t% »4 5<r ..'*?...*?. .^ 



p 



jc :£- 



I 



I. 



I 



^ 



=&^J 



B 



8. 



=rt=? 



P 



/v 



Ji 



12 



14 



:4« 



84 

 108 



-UO 



•»44 

 .15^ 

 -1^8 



■18« 



'2o4 



2i<r 



zzS 



-a4^ 



-252, 



26^ 



I. , I 



. r ... 1. . I ... I 

 4S ^ a4 la 



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. O— The seventh. 



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



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



34 



