Note 1694 — Chapter XXVII · OF POISONING WITH OPIUM.
Reading edition
Dr. Pereira states that he is obliged to differ from me upon this important subject for he “has several times obtained from the stomach of subjects in the dissecting-room a liquor which reddened the salts of iron” (Elements of Materia Medica, p. 1741). This fact, however, does not exactly touch the question. The reddening must be occasioned, not in the crude fluid, but with a substance obtained by the process of analysis for detecting meconic acid in complex organic mixtures,—otherwise the proposition in the text stands good.