This section is from the book "Materia Medica And Therapeutics: An Introduction to the National Treatment of Disease", by John Mitchell Bruce. Also available from Amazon: The pharmacology and therapeutics of the materia medica.
Nitrous Oxide Gas, Protoxide of Nitrogen, "Laughing Gas."
Source. - Made by heating Nitrate of Ammonia. NH4NO3 =
N2O + 2H1O.