WATER STORAGE AND CANALIZATION. 313 
the Boogharaib, Massoodee Desodee Rithwammihi, and Mahmou- 
dee, are very insignificant in comparison with the Nahrawan. 
with vines, palms, and many other fruit-trees, and the meadows 
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It derived its supply from a spring about 60 
rom the city, and in its course cut through 
jueduets, in one instance 125 feet high. It was 4 feet wide at 
base and 6 feet high, closing at the top in the shape of a 
" and was sufficiently high for a man to walk in with ease. 
a : 
which hag preserved it from the attacks of time so well 
;Ven now a large portion of it is used for the supply of Tunis, 
“ derives its water from the same source. 
“ “see judging from the ruins of large carne Ee 
eir coun very remote per 
a epee ctiesciente Rerodabne desesibes 
ome conduit for supplying Samos, which had a channel 3 feet 
"e, and which pierced a hill with a tunnel nearly a mile long. 
ler Mason a ravine 200 feet 
r, and joints were formed similar to @ spig0* : 
ut by the annular end of one end of a block fitting into 
