Oxide of Didymium, DO.
"A System of Instruction in the Practical Use of the Blowpipe" by Anonymous
DIDYMIUM ANELLUS, Morgan, n. sp.
"The Myxomycetes of the Miami Valley, Ohio" by A. P. Morgan
The rare metals cerium, lauthanum, and didymium have been lately investigated by Drs.
"The Galaxy, Volume 23, No. 2, February, 1877" by Various
It suggests a didymium in its form and habit, but is near a badhamia.
"The North American Slime-Moulds" by Thomas H. (Thomas Huston) MacBride
Didymium chlorid c. p., in 3-gram doses, was fed to a rabbit weighing 1,020 grams.
"Barium, A Cause of the Loco-Weed Disease" by Albert Cornelius Crawford
Lanthanum and Didymium discovered by Mosander.
"The Progress of Invention in the Nineteenth Century." by Edward W. Byrn