ARGIAMBLYOPIA 



109 



ARMY ITCH 



are used : A. cyanidum, AgCN, used in the prepara- 

 tion of hydrocyanic acid. A. iodidum, Agl,. some- 

 times used internally instead of A. nitras. Dose 

 gr. '^-j. A. nitras, AgNO s , " nitrate of silver," 

 argentic nitrate, " lunar caustic," a powerful astringent 

 and an escharotic of moderate strength. It stains 

 skin and other tissues black when applied in strength. 

 In small doses it stimulates the heart and nerve centers. 

 If too long continued, it leaves a slate-colored, insolu- 

 ble deposit of silver under the skin (Argyria). Dose 

 gr- l A>-%- A. nitras dilutus, the mitigated caustic or 

 dilute stick is fused with an equal weight of potassium 

 nitrate. A. nitras fusus, " stick caustic." Con- 

 tains four per cent, of silver chlorid. It is used locally. 

 A. oxidum, Ag 2 0, explosive when treated with am- 

 monia. Dose gr. %-\). A. vivum, an old name for 

 mercury or quicksilver. 



Lrgiamblyopia (ar-ge-am-ble-o' '-pe-aK) [apyia, disuse ; 

 SftpXvuiria, dim-sightedness]. See Argamblyopia . 

 rgilla [ar-jil f -afi) [apyi/Jjog, potter's clay]. White 

 or potter's clay, alumina. See Bole. 

 rgol (art-gol) [dpyoc, white]. The impure tartar 

 derived from wine. See Tartar. 

 rgyll-Robertson Pupil. See Signs and Symptoms, 

 Table of, and Pupil. 



Lrgyll- Robertson's Operation. See Operations, 

 Table of. 



rgyria (ar-jir* '-e-ah) [argentum, silver]. A form of 

 chloasma or discoloration of the skin and mucous 

 membranes produced by the prolonged administration 

 of nitrate of silver, the molecules of silver being de- 

 posited in much the same position as those of the 

 natural pigment of the skin. It may he general, from 

 internal administration, or local, from its local applica- 

 tion, 

 rgyriasis (ar-jir-i'-as-is). See Argyiia. 



Argyrosis (ar-jir-o' -sis) . Same as Argyria, q.v. 



Lrhinia (ah-rin' -e-ah) [d priv. ; pig, nose]. Congen- 

 ital absence of the nose. 



rhythmia [ar-ith' -me-ah). See Arrhythmia. 

 ricin (ar'-is-in) [Arica, in Peru], C^H^N^O^. An 

 alkaloid obtained from several varieties of cinchona 

 bark. 



iditas (ar-id / -it-as) [L., " dryness "]. A dried or 

 withered condition of any part or organ. 



^ridura (ar-id-u'-rah) [L.]. Dryness; a drying up, 

 withering, or wasting of a part, or of the organism as 

 a whole. 



^.ril, or Arillus (ar'-il, or ar*-il-us) \aridus, dry]. In 

 biology, the accessory coat of certain seeds, growing 

 from the funiculus, hilum, or placenta, as the mace of 

 nutmegs. 



risema (ar-is-e , -mah) [apov, arum ; afjua, a sign]. 

 A genus of araceous herbs. A. atrorubens, the wild 

 or Indian turnip, or Jack-in-the- Pulpit of Eastern X. 

 America. Its conn is strongly stimulant and acrid, 

 with emetic, expectorant, and sternutatory qualities. 

 Other species have similar properties. Unof. 

 Arista [ar-is'-tah) [L.]. In biology, the awn or beard 



of certain flowers or animals. 

 Aristate {ar-is'-tdt) [arista, the awn or beard of grain]. 

 In biology, awned. Tipped with a bristle, 

 istol (arS-is-tol) [oomjtoc, best; oleum, oil], (C 6 H 2 - 

 CH 3 OI.C 3 H-) 2 . Annidalin ; Dithymol-iodid. An 

 iodin compound used as a substitute for iodoform as an 

 antiseptic dressing. It has the advantage of being 

 odorless, and is used either in the powder form or as 

 a five to ten per cent, ointment with vaselin or lanolin. 

 Aristolochia {ar-is-to-lo / -ke-ah) [apioroc, best; /j>xela, 

 the lochia]. A genus of exogenous herbs, many 

 species of which have active medicinal qualities. A. 

 clematitis, of Europe, has been used as a tonic, stimu- 



lant, and diaphoretic. A. cymbifera, of S. America, 

 furnishes a part of the drug called Guaco (g. v.), and 

 is a good tonic and stimulant. A. serpentaria (see 

 Serpentaria) is at present more used in medicine than 

 any other species. 



Aristolochic (ar-is-to-lc/ -kik) [apurrog, best ; /.oxeia, the 

 lochia]. I. Having the property of expelling the 

 placenta, or of exciting or promoting the lochial dis- 

 charge. 2. A medicine used for expelling the secun- 

 dines or for exciting the lochial flow. 



Aristolochin [ar-isto-lo'-kin) [apur-og, best; 'tjox^a, 

 the lochia]. A bitter principle found in Virginia 

 snake-root. See Serpentaria. 



Aristotle's Experiment. The double feeling experi- 

 enced by the fingers when a single pebble is placed 

 between the crossed fingers of one hand. 



Aristulate {ar-is' '-tu-ldt) [aristula, dim. of Arista, awn 

 or beard of grain]. In biology, having a short awn. 



Arithmomania [ar-ith-mo-ma' -ne-ah) [apidpoc, a num- 

 ber ; pavia, madness] . An insane anxiety with 

 regard to the number of things that fall under 

 the observation. Sometimes it consists in constant 

 or uncalled-for counting, either of objects or in mere 

 repeating of consecutive numbers. 



Arlt-Jaesche's Operation. See Operations, Table of. 



Arlt's Ointment. An ointment containing grs. viiss of 

 belladonna to 3JX °f Dme ointment, for use in bleph- 

 arospasm. 



Arlt's Operation. See Operations, Table of. 



Arm [arm) \armare, to arm] . I . That part of the upper 

 extremity from the shoulder to the wrist. 2. That por- 

 tion of the stand connecting the body or tube of a 

 microscope to the pillar. 



Armadillo [ar-ma-dil' -o) [Sp.,dim. of armado, armed]. 

 A trade-name for a proprietary arrangement of plates, 

 straps, and buckles worn upon the person for its 

 alleged electric effects. 



Armamentarium (ar-ma-men-ta / -re-um) [L. , an 

 arsenal]. The outfit of medicines or instruments of 

 the physician or surgeon. 



Armarium (ar-ma' -re-uni) [L.]. See Armamentarium. 



Armature (ar 1 ' -mat-chur) [armatura, equipment]. A 

 mass of soft iron at the extremity of a magnet. Also, 

 the core of iron around which coils of insulated wire 

 are wound or disposed. 



Arma urticaria {at J -mah er-tik-a' '-re-ah) [L.]. The 

 urticating weapons of Calenterates. 



Arm-chair, Charcots. See Shaking Cure. 



Armed Tape-worm. See Tenia solium. 



Armenian \ar-me / -ne-an) [Armenia]. Of or belonging 

 to Armenia. A. Blue. Same as Ultramarine. A. 

 Bole, a reddish, unctuous earth or clay formerly 

 much used in medicine, now used in tooth-powders 

 and in veterinary practice. It is absorbent and 

 astringent. 



Armilla (ar-mil'-ah) \a rmilla, a bracelet, ring]. I. In 

 biology, the annular ligament of the wrist ; a colored 

 ring on the tibia of a bird or the plaited frill on the 

 stipe of certain mushrooms. 2. The Gasserian gang- 

 fion. 



Armpit (arm' -pit) [armus, shoulder; puteus, a well]. 

 The axilla. 



Armus (ar'-mus) [armus, dpudg, the shoulder]. The 

 arm, or the arm and shoulder. 



Army Itch [ar'-me itch). A distressing chronic form 

 of itch prevalent in the United States at the close of 

 the civil war. The itching was intense. The erup- 

 tion was seen especially on the arms, forearms, chest, 

 abdomen, and lower extremities, particularly on the 

 ulnar side of the forearm and inner aspect of the 

 thigh. It resembled prurigo associated with vesicles, 

 pustules, and eczema. 



