Sentence:  It seems at first sight a strange thing that Paris, with its apparently pure air, should be by no means so healthy a place to live in as London. [...] Another cause, not so sensible to the eye as to another organ, we have long believed to be, the universal accumulation of <WSD>ordures</WSD> in pestiferous cess-pools under or near almost every house. [...] The removal of these <WSD>ordures</WSD> is periodical, and must take place in the night. [...] From the cleaned-out dwellings the <WSD>ordures</WSD> are taken to the greatest laystall in the world, the Boyauteries of Montfaucon, famous for its filth, its carrion, and countless myriads of rats. Thence they are bought up by growers as manure for the land; [...] 
Meaning of the word marked with <WSD> tags:  Dung, excrement.