4th “ One hundred millionth. 5th “ One ten thousand millionth. 6th “ One million millionth, or one billionth, marked II. 7th “ One hundred billionth. 8th “ One ten thousand billionth. 9th “ One million billionth, or one trillionth, marked III. 10th “ One hundred trillionth. 11th “ One ten thousand trillionth. 12th “ One million trillionth, or one quadrillionth, marked IV.,--and so on indefinitely. The large figures denote the degrees of POTENCY.] “gastralgia, epistaxis, haemoptysis,--asthma and suppuration of the lungs,--megrim, deafness, cataract and amaurosis,--paralysis, loss of sense, pains of every kind, etc., appear in our pathology as so many peculiar, distinct, and independent diseases.” For the last three centuries, if the same authority may be trusted, under the influence of the more refined personal habits which have prevailed, and the application of various external remedies which repel the affection from the skin; Psora has revealed itself in these numerous forms of internal disease, instead of appearing, as in former periods, under the aspect of an external malady. These are the three cardinal doctrines of Hahnemann, as laid down in those standard works of Homoeopathy, the “Organon” and the “Treatise on Chronic Diseases.” Several other principles may be added, upon all of which he insists with great force, and which are very generally received by his disciples. 1. Very little power is allowed to the curative efforts of nature. Hahnemann goes so far as to say that no one has ever seen the simple efforts of nature effect the durable recovery of a patient from a chronic disease. In general, the Homoeopathist calls every recovery which happens under his treatment a cure. 2. Every medicinal substance must be administered in a state of the most perfect purity, and uncombined with any other. The union of several remedies in a single prescription destroys its utility, and, according to the “Organon,” frequently adds a new disease. 3. A large number of substances commonly thought to be inert develop great medicinal powers when prepared in the manner already described; and a great proportion of them are ascertained to have specific antidotes in case their excessive effects require to be neutralized. 4. Diseases should be recognized, as far as possible, not by any of the common names imposed upon them, as fever or epilepsy, but as individual collections of symptoms, each of which differs from every other collection. 5. The symptoms of any complaint must be described with the most minute exactness, and so far as possible in the patient's own words. To illustrate the kind of circumstances the patient is expected to record, I will mention one or two from the 313th page of the “Treatise on Chronic Diseases,”--being the first one at which I opened accidentally. “After dinner, disposition to sleep; the patient winks.” “After dinner, prostration and feeling of weakness (nine days after taking the remedy).”