In Bulletin No. 8, page 307, under the heading Sulphate of Soda, the term Epsom Salt was used by mistake in place of the correct term, Glauber’s salt. Also, in the same paragraph it is stated that the "effloresced" salt (sulphate of soda), for use in clarifying fat, is prepared by exposing finely powdered Glauber’s salt in a thin layer to the air for some days, “or better, by drying the powdered salt at a gentle heat.”
Patrick, G. E.
"The Iowa station milk test, a correction,"
Bulletin: Vol. 1
, Article 3.
Available at: https://lib.dr.iastate.edu/bulletin/vol1/iss9/3