An alkaloid, obtained from Atropa belladonna. Formula , C 17 H 23 NO 3 . Preparation , Triturations. (Most of the poison-symptoms were obtained from the sulphate of Atropine.) Authorities. 1 , Eidherr, A. H. Z., 60, 11 et seq . (proved 3d and 4th trits.); 2 , W. S. Moffatt, Hale's provings, Trans. of Hom. Med. Soc. of N. Y., 6, 83 (proved the 2d dec. trit.); 3 , C. S. Fahnenstock, ibid. (1st dec. trit.); 4 , C. H. Chamberlin, ibid. (1st dec. trit.); 5 , J. M. Smith, ibid. (1st dec. trit.); 6 , Shroff, Lehr. d. Pharm. (took .005 gramme); 7 , Kafka, A. H. Z., 52, 178 (took 1/60 grain); 8 , Harley, Old Veg. Neurotics (effects from subcutaneous injection of 1/160 to 1/20 gr.); 9 , Lusanna, A. H. Z., 55, 157 (general statement of effects); 10 , Homan (took part of solution 2 grs. to 1 oz.), (prepared for the eye), N. A. J. of Hom., 1, 115 (N. Y. J. of Med.); 11 , Sharpey, Mon. Hom. Rev., 18, 39, from Lancet (took a sol. of Atrop. by mistake); 12 , Blackley, M. Hom. Rev., 17, 481 (Rose E. took a teaspoonful of a lotion, 2 grs. to 1 oz.); 13 , Andrew, Ed. Med. J., 1852 (girl 21 years took 2/3 gr.); 14 , Piffingskold, A. H. Z., 54, 180 (took 6 drops of a sol., 5 grs. to 1 oz.); 15 , Holthouse, A. H. Z., M. Bl., 1, 38 (child took 1/2 gr.); 16 , A. H. Z., M. Bl., 11, 59 (child took a sol., 1/2 gr. to 1 oz.); 17 , Weil, A. H. Z., 1873 (Effects of Atrop. on conjunctiva); 18 , Virch. Arch., 49, 450 (1/2 gr. in sol.); 19 , Virch. Arch., 48 (Effects of instillation into eye); 20 , Chittenden, Med. Invest., 11, 478 (Effects from applying a sol. of 1 gr. to 1/2 dr. of water to a hollow tooth); 21 , Hughes, poisoning of a boy 3 1/2 years old, by a solution of 1/2 gr. of Atropia, B. J. of Hom., v. 20; 22 , Grandi, in Pereira, Experiments with Atropine, 1/16 to 1 gr. (see Hughes's Monograph on Belladonna); 23 , Leach, Med. Times, 1865 (from Hughes); 24 , Am. Journ. Hom. Mat. Med., Nov., 1872, from Atropia, gr. 1/200, bisquater die, in a case of ulcer of stomach in a man of 40 (from Hughes); 25 , Rose, Brit. Journ. of Hom., 27, 225 (from Hughes); 26 , Pereira, Elem. of Mat. Med., 4th ed., London, 1855 (from Hughes); 27 , Trousseau and Pidoux (from Hughes); 28 , Practitioner, 4, 372 (from Hughes); 29 , Ringer, in Practitioner, vol. 9 (from Hughes).