Sewer gas has always been wasted, heretofore; nobody tried to save up sewer-gas--you can't name me a man.

Ain't that so?
you know perfectly well it's so." "Yes it is so--but I never--er--I don't quite see why a body--" "Should want to save it up?
Well, I'll tell you.

Do you see this little invention here ?--it's a decomposer--I call it a decomposer.

I give you my word of honor that if you show me a house that produces a given quantity of sewer-gas in a day, I'll engage to set up my decomposer there and make that house produce a hundred times that quantity of sewer-gas in less than half an hour." "Dear me, but why should you want to ?" "Want to?
Listen, and you'll see.

My boy, for illuminating purposes and economy combined, there's nothing in the world that begins with sewer-gas.