This section is from the book "A Practitioner's Handbook Of Materia Medica And Therapeutics", by Thos. S. Blair. Also available from Amazon: A Practitioner's handbook of Materia Medica and Therapeutics.
Populus Candicans, Balm of Gilead. A fluidextract of the leaf buds is used in making the syrup of white pine." The agent is an excellent one, used alone, in doses of 30 I. Its range of utility is in acute colds with bronchial irritation and hoarseness.