This section is from the book "Materia Medica And Therapeutics Inorganic Substances", by Charles D. F. Phillips. Also available from Amazon: Materia medica and therapeutics.
I agree with some good observations made by Dr. Glover, drawing attention to the benefit obtained sometimes from nitric acid in cases of chronic catarrh and bronchitis when secretion is fairly free, when nerve-exhaustion is a prominent symptom, and when ammonia and expectorants fail to relieve (Lancet, i., 1865); this fact deserves more attention than it has yet received. Dr. Glover combines nitrous ether with the acid, and sometimes tinct. camph. co. is also indicated, the precipitated camphor, etc., being readily suspended in cetraria or mucilage.