Despite Mayawati, Dalits in UP still carry nightsoil— rediff.com
Basic instruction on lighting wagonfires, bunking down & operating the nightsoil "cassette" (what a cute name for a revolting container).— TravelPod.com Recent Updates
Indians use fish; Chinese, nightsoil; agricultural chemists concoct tasty tonics of nitrogen and potash -- where's your progress?— Greener Than You Think
20 tons of fresh mixed excrements, to make one ton of _dry_ nightsoil, or the entire amount voided by a mixed family of 43 persons in a year.— Talks on Manures A Series of Familiar and Practical Talks Between the Author and the Deacon, the Doctor, and other Neighbors, on the Whole Subject

If you'd like to prod us on getting a pronunciation for this word, sign in (or sign up) and let us know.
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
We are still working on calculating this word's frequency.