The sero-purulent matter contained in the Scabies vesicle was used for Hahnemann's provings (No. 1 ). The product of "Psora sicca" (epidermoid efflorescence of Pityriasis) was used for the provings by Dr. Gross (Nos. 2 to 5 ). Preparation , Triturations. Authorities. 1 , Hahnemann's provings by "S---" and "R---," with the 30th potency, once repeated doses, Archiv. f. Hom., 13, 3, 163; 2 , Gross, Archiv. f. Hom., 15, 3, 177; 3 , Ilke, ibid.; 4 , Kretschmar, ibid.; 5 , Liedbeck, ibid.; 6 , Usher, "The Organon," 1, p. 104, effects of 6th dil, given to a woman for intense sleepiness in forenoon, of some years' duration; 7 , same, effects of continuing to take the "C. M." Swan, after the cough, for which it had been prescribed, had been relieved.