"On one side of this third piece of paper I myself write with this mercurous nitrate solution.
"Master Tales of Mystery, Volume 3"
Collected and Arranged by Francis J. Reynolds
The fumes of ammonia have formed the precipitate of black, mercurous nitrate, a very distinct black writing which is almost indelible.
"Master Tales of Mystery, Volume 3"
Collected and Arranged by Francis J. Reynolds
Minor sources include the black or gray sulphide, metacinnabar, the native metal, and the white mercurous chloride, calomel.
"The Economic Aspect of Geology"
C. K. Leith