In the course of more than twenty years practice, though I have never prescribed this medicine, yet, I have not, after fairly declaring my opinion, opposed its being given, when desired by the sick or their relations; and as the cure, where I have been concerned, has been wholly committed to it, without the addition of any medicine, or even regimen, excepting what is prescribed in the printed directions, or what the Inventor himself has ordered, some fair opportunities have occurred of observing its effects, to which, and to every other information that could be obtained, with a mind open to conviction, I have carefully attended. But in this, as in all our former researches, the evidence has been unfavourable to the fame of the powder.
In some instances it has occasioned fainting, convulsions, and other violent symptoms, which terrified those who gave it. In all which I have seen, it has proved unsuccessful, though, in some cases the cure has afterwards been accomplished by safer methods; and in those where it was too late to use other remedies, the sick have died, although it was probable they might have recovered by a different management, which has succeeded in similar instances, but from an abused and misplaced confidence, has too often been set aside to make way for this favourite medicine.
An argument still remains in favour of the powder drawn from the credit due to its Inventor. If that is impeached by what has already been advanced, it is only by the force of the evidence, since all personal application has been avoided. But as the reputation of the medicine is chiefly supported by an implicit confidence in the Inventor, it is necessary, however unpleasing, that this should also be considered.
When our assent is demanded, on the credibility of the relator, to any fact which we are not permitted to examine, we can only judge of its probability from his known accuracy and ability. Several specimens of these have occurred in the course of our enquiry. Quotations have been misrepresented[87]. Authorities misapplied[88]. Evidence produced which establishes facts, directly opposite to those in support of which it is perverted[89]. Palpable contradictions have been pointed out[90]; and an air of mystery and devotion detected, the tendency of which, when joined to a train of suspicious circumstances, cannot be mistaken[91].