Used by the old school as an escharotic in the burning away of condylomata, etc., also as a disinfectant in hospital gangrene, etc., on account of its germ killing properties, which were found to be greater than those of any other substance in use. The only systematic treatment it has received at the hands of the medical profession was in our ranks, from Drysdale, who proved the sesquioxide in 1842, see Hahn. Materia Medica, Part I (the symptoms are marked — in our arrange- ment); by Henry Duffield and Guernsey in 1852, Inaugural Thesis at Philadel- phia Homoeopathic Medical College, and by Oehme in 1873, N. Y. J. of Horn., V. 1, p. 367. Clinical use of it was made in six cases of phrenitis by Pehrson. ^ Mind. — Mind in a state of confusion for two days ; memory aggravated at times to such a degree that he found himself at a loss to know how to make several of the letters in the alphabet. ■ Delirious states. ^Phrenitis. ■ Quarrelsome in delirium. ^Phrenitis. ^ Sensorium. — Dull confusion in head, in forenoon. Is heavy, dull, stupid. Sensation of lightness of head like vertigo, with heat in face; face flushed; pulse full, slightly accelerated. At 10 o'clock, while walking, lightness in head which in- clined him continually to r. side. Giddiness when going down stairs. ^ Inner Head. Pain extends into anterior portion of brain from r. eyeball, and from aching teeth. Fulness of head; in the evening lightness at heart as if a vacuum was there; giddiness when going down stairs, and cold feet. Woke at 5 a.m. with feeling of fulness in upper and fore- part of head. — Shooting pains in 1. temple. Pulsative, throbbing sensation from region of heart to 1. eye and 1. side of head ; general fulness of forepart of head, with occasional slight pains in 1. hypochondrium. ■Throbbing in occiput. ^Phrenitis. ■ Great sensitiveness of brain. ^Phrenitis. ■ Inflammatory affections of the brain. * Outer Head. Heavy pain along coronal suture, extending backward and occupying all of parietal portion, at 10 107 CHROMICUM ACIDUM. A.M.; was not > by dinner, warmth, or cold, and con- tinued without variation until 4 p.m. ; walking in open air for one hour did not change the pain. ^ Sight and Eyes. Diminished vision. — Several sharp cutting pains across 1. eyeball at night in bed ; smarting and heaviness in eyelids in evening. — A kind of sudden jerk of both ej^eballs for a second. Throbbing in 1. eye. Pain from r. eyeball up into anterior portion of brain, with soreness of orb to touch. — Feeling of dryness and uneasiness in r. eye and nostril. Eyes feel sore and as if they were inflamed. — Cutting pain across 1. eyeball, with flow of tears in morning in bed. — Smarting in eyelids ; in evening accompanied by prick- ing in skin. — Itching and smarting around eyes, especially in inner canthi. Dull pain over 1. eye as if headache would set in, con- tinued all day. — Dull, pressive pain over r. eye on awaking in morning. ^ Hearing and Ears. Occasionally sensation in r. ear, as if water was in it, it appears and disappears suddenly. ■ Pain from toothache extends into ear. — Sudden jerking pains in 1. ear and a cold feeling in a small spot in meatus. ^ Smell and Nose. Uneasy feeling in r. nostril. Fetid, musty smell in posterior nares, chiefly perceived during expiration, after breakfast and dinner, i Oz?ena. ^ Upper Face. Face flushed and hot. I Face rose red during coughing spells. ^Laryngeal phthisis. ^ Lower Face. — Quivering of lower lip. Lips dry and disposed to chap. I I Trismus. '° Teeth and Gums, i Toothache, with pain extending into ear. Soon after going to bed, 10 p.m., two attacks of very violent toothache on r. side; each attack lasted about ten to fifteen minutes, with a free interval of several minutes ; during the second attack painful teeth seemed as if too long; pain extended into forehead. A pain between the head, 1. shoulder-blade and shoulder grew much better during toothache; during the pain he was frequently obliged to change his position. After the second attack of toothache such uneasiness in limbs that he was obliged to get up and walk about, CHROMICUM ACIDUM. 108 teeth of r. side felt too long even next morning, and cold water produced pain in teeth. Repeated toothache of short duration, especially in lower jaw r. side; during attacks of toothache the correspond- ing artery beats more violently than on the other side. In the night sudden violent pain in several undecayed teeth, 1. side, especially in lower jaw; while the pain lasts the corresponding arteries beat more violently. In morning after usual rinsing of mouth with cold water, toothache in 1. lower jaw for a short time. ^^ Taste and Tongue. A swallow of diluted Madeira tastes singularly disagreeable. — Metallic taste in mouth before dinner. — Pricking in tongue. ^^ Inner Mouth. During the eating of food, which tastes well and natural, sensation as if exhaled air smelled putrid, almost causing nausea. I Periodical ranula with dry mouth, < afternoon, sore when chewing; at same time blind piles and costiveness. : Scorbutic diseases of gums. 13 Throat. Accumulation of tough mucus in throat, with con- stant disposition to swallow it, because it cannot easily be hawked up. White phlegm in throat causing hawking, especially mornings, i Ulceration of mucous membrane of mouth and pharynx. Sore throat awakens at night, is very painful, with short cough and retching. I Angina diphtheritica, crouposa and gangrsenosa. ^* Appetite. No appetite for breakfast. — Unusual hunger in middle of day. ^^ Eating and Drinking. After breakfast and dinner, musty smell in posterior nares. After dinner, 2 p.m.,' a qualmishness of stomach lasting until 4 P.M. Half an hour after a simple supper, nausea, gradually in- creasing, with sensation as if a stool would follow. While eating, sensation as if exhaled air smelled putrid, smells the food repeatedly to satisfy himself that it is not putrid. ^® Nausea and Vomiting. Nausea, transient at different times, especially when the stomachis empty. Several times vomiting of food, and afterwards three times of bile, with much retching at intervals of five to ten minutes, with warm sweat and usual heat. Sudden inclination to vomit in morning while dressing, with flow of water in mouth and dull pressure in