I proceed to examine the proofs of the leading ideas of Hahnemann and his school.
In order to show the axiom, similia similibus curantur (or like is cured by like), to be the basis of the healing art,—“the sole law of nature in therapeutics,”—it is necessary,
1. That the symptoms produced by drugs in healthy persons should be faithfully studied and recorded.
2. That drugs should be shown to be always capable of curing those diseases most like their own symptoms.
3. That remedies should be shown not to cure diseases when they do not produce symptoms resembling those presented in these diseases.
1. The effects of drugs upon healthy persons have been studied by Hahnemann and his associates. Their results were made known in his Materia Medica, a work in three large volumes in the French translation, published about eight years ago. The mode of experimentation appears to have been, to take the substance on trial, either in common or minute doses, and then to set down every little sensation, every little movement of mind or body, which occurred within many succeeding hours or days, as being produced solely by the substance employed. When I have enumerated some of the symptoms attributed to the power of the drugs taken, you will be able to judge how much value is to be ascribed to the assertions of such observers.
The following list was taken literally from the Materia Medica of Hahnemann, by my friend M. Vernois, for whose accuracy I am willing to be responsible. He has given seven pages of these symptoms, not selected, but taken at hazard from the French translation of the work. I shall be very brief in my citations.
“After stooping some time, sense of painful weight about the head upon resuming the erect posture.”
“An itching, tickling sensation at the outer edge of the palm of the left hand, which obliges the person to scratch.” The medicine was acetate of lime, and as the action of the globule taken is said to last twenty-eight days, you may judge how many such symptoms as the last might be supposed to happen.
Among the symptoms attributed to muriatic acid are these: a catarrh, sighing, pimples; “after having written a long time with the back a little bent over, violent pain in the back and shoulder-blades, as if from a strain,”—“dreams which are not remembered,—disposition to mental dejection,—wakefulness before and after midnight.”