MAINTENANCE OF SEWERS
198. Work Involved. 199. Causes of Troubles. 200. Inspection.
201. Repairs. 202. Cleaning of Sewers. 203. Flushing Sewers.
204. Cleaning Catch-basins. 205. Protection of Sewers. 206.
Explosions in Sewers. 207. Valuation of Sewers. 332–351