77     I spent twelve years in investigating the source of this incredibly large number of chronic affections, in ascertaining and collecting certain proofs of this great truth, which had remained unknown to all former or contemporary observers, and in discovering at the same time the principal (antipsoric) remedies, which collectively are nearly a match for this thousand-headed monster of disease in all its different developments and forms. I have published my observations on this subject in the book entitled The Chronic Diseases (4 vols., Dresden, Arnold. [2nd edit., Düsseldorf, Schaub.]) before I had obtained this knowledge I could only teach how to treat the whole number of chronic diseases as isolated, individual maladies, with those medicinal substances whose pure effects had been tested on healthy persons up to that period, so that every case of chronic disease was treated by my disciples according to the group of symptoms it presented, just like an idiopathic disease, and it was often so far cured that sick mankind rejoiced at the extensive remedial treasures already amassed by the new healing art. How much greater cause is there now for rejoicing that the desired goal has been so much more nearly attained, inasmuch as the recently discovered and far more specific homœopathic remedies for chronic affections arising from psora (properly termed antipsoric remedies) and the special instructions for their preparation and employment have been published; and from among them the true physician can now select for his curative agents those whose medicinal symptoms correspond in the most similar (homœopathic) manner to the chronic disease he has to cure; and thus, by the employment of (antipsoric) medicines more suitable for this miasm, he is enabled to render more essential service and almost invariably to effect a perfect cure.