§ 137
The more moderate, within certain limits, the doses of the medicine used for such experiments are – provided we endeavor to facilitate the observation by the selection of a person who is a lover of truth, temperate in all respects, of delicate feelings, and who can direct the most minute attention to his sensation – so much the more distinctly are the primary effects developed, and only these, which are most worth knowing, occur without any admixture of secondary effects or reactions of the vital force. When, however, excessively large doses are used there occur at the same time not only a number of secondary effects among the symptoms, but the primary effects developed, and only these, which are most worth knowing, occur without any admixture of secondary effects or reactions of the vital force. When, however, excessively large doses are used there occur at the same time not only a number of secondary effects among the symptoms, but the primary effects also come on in such hurried confusion and with such impetuosity that nothing can be accurately observed; let alone the danger attending them, which no one who has any regard for his fellow-creatures, and who looks on the meanest of mankind as his brother, will deem an indifferent manner.
