This section is from the book "A Manual Of Practical Therapeutics", by Edward John Waring. Also available from Amazon: A Manual of Practical Therapeutics.
Cinchonidine. An alkaloid found in Cinchona Barks. It is isomeric with Cinchonine (C10H24N2O2) The Sulphate of Cinchonidine (C40H24N2O2HO,SO3) is occasionally employed in medicine.
Med. Prop. and Action. Believed to be similar to those of Cinchonine, but a further examination of its effects is required. Dote of the Sulphate of Cinchonidine, gr. j. - gr. x.