The healing art--the science of medicine, cannot be placed, in the exact category. It is a popular saying, that _there is a glorious uncertainty in the law_. This opinion has been ably considered, by that most amiable and learned man, the late John Pickering, in his lecture, on the alleged uncertainty of the law--before the Society for the Diffusion of Useful Knowledge, in 1834. The credulity of the client, to which Mr. Pickering does not refer, must, in some cases, be of extraordinary strength and quality. After presenting a case to his counsel, as favorably to himself as he can, and carefully suppressing much, that is material and adverse, he fondly believes, that his advocate will be able to mesmerise the court and jury, and procure a verdict, in opposition to the facts, apparent at the trial. He is disappointed of course; and then he complains of the uncertainty of the law, instead of the uncertainty of the facts. In a dissertation, before the Medical Society, in June, 1828, Dr. George Cheyne Shattuck, after setting forth a melancholy catalogue of the troubles and perplexities of the medical profession, concludes by saying, that "all these trials, to which the physician is subjected, do not equal that, which proceeds from the _uncertainty_ of the healing art." When we contrast this candid avowal, from an accomplished and experienced physician, with the splendid promises, and infallible assurances of empirics--with their balms of Gilead, panaceas, and elixirs of everlasting life--we cannot marvel, that the larger part of all the invalids, in this uncertain and credulous world, fly from those conservative professors, who promise nothing, to such as will assure them of a perfect relief, from their maladies, no matter how complicated, or chronic, they may be--with four words of inspiriting import--NO CURE NO PAY. I am no physician; my opinion therefore is not presented _ex cathedra_: but the averment of Dr. Shattuck is, I presume, to be viewed in no other light, than as the opinion of an honorable man, who would rather claim too little, than too much, for his own profession: who would rather perform more, than he has promised, than promise more, than he can perform. If the regularly bred and educated physician complains of uncertainty, none but a madman would seek for its opposite, in the palace, or the kennel, of a quack; for the charlatan may occasionally be found in either. The first thing to be done, I suppose, by the regular doctor, is to ascertain what the disease is. This, I believe, is the very last thing, thought of by the charlatan. He is spared the labor of all pathological inquiry, for all his medicines are, fortunately, panaceas. Thus, he administers a medicine, for the gout; the patient does not happen to have the gout, but the gravel; it is the same thing; for the physic, like our almanacs, was calculated, for different meridians.