ARNANDON i.Kl 1 N 



110 



ARSENICAL 



Arnandon Green. Same as Mitt '/•■/■' s Green, 

 Arnatto (ar-naf-o). See Annotto. 



Arnica (ar'-nih-ah) [L,.:gen., Arnica]. A gennsof com- 

 posite-flowered plants. The name in medicine de 



note- the plant commonly known as " Leopard's 

 bane," A. montana. Both (lowers and roots arc used 

 in medicine. Its properties arc probably due to an 

 alkaloid, trimethylamin , « ll,\ In small doses it i- 

 a cardiac stimulant ; in larger doses a depressant. In 

 toxu doses it frequently causes death. It is a popular 

 remedy, when locally applied, For sprains, bruises and 

 surface wound-, and i> valuable also in typhus and 

 typhoid fevers as an antipyretic. A., Emplastrum, 

 contain- ext. ^\ root 33, resin plaster "7 part-. A., 

 Ext. Radicis. Dose gr. j-iij. A., Ext. Rad. Fid. 

 Dose n\,v-xx. A., Infusum, 20 parts (lowers, 100 

 parts water. Superior to the tincture for local use. A., 

 Tinct., 20percent. Dose tr^v— xxx. A., Tinct. Rad., 

 10 per cent. 1 (ose tT^v— xxx. Trimethylamin, (unof.). 

 Dose gr. ij-iij in syrup. Arnicae flores, arnica flow- 

 ers. Arnicae radix, the root of arnica. 



Arnicin 1 ir'-nis-in) [arnica], C 20 H 30 O 4 . A brownish, 

 bitter glucosid extracted from the (lowers of Arnica 

 montana. 



Arnold's Convolution. See Convolutions, Tabic of. 

 A. Fold, valvula lachrymalis superior, a fold of the 

 mucous membrane seen in the lachrymal sac. A. 

 Ganglion. See Ganglia, Table of. A. Nerve. See 

 Nerves, Table of . A. Plexus. See Plexus. 



Arnott's Method. See Treatment, Methods of. A. 

 Mixture. See Frigorific Mixture. A. Ventilator. 

 / entilation. 



Aroma (ar-c/-mah) [apuua, spice]. The volatile fra 

 grant or odorous emanation of certain vegetable sub 

 stances. 



Aromatic (ar-o-mat' -ik) [apuua, spice]. I. Having a 

 ,-picy odor. 2. A substance characterized by a bag- 

 rant, spicy taste and odor, as cinnamon, ginger, the es- 

 sential oils, etc. A stimulant to the gastro-intestinal 

 mucous membrane. 3. A qualification applied to a 

 -ries of carbon compounds originating from a nucleus 

 composed of six carbon-atoms, C 6 H 6 . Their stability 

 is relatively great as compared to the fatty bodies. A. 

 Acids, those of the ben/in group of hydrocarbons. 

 A. Compound, any benzyl derivative. A. Fid. Ext., 

 aromatic powder 100, alcohol q. s. A. Group, a 

 •- of hydrocarbons having the composition C, - 



II 



16- 



A. Powder. See Cinnamomum. A. Vine- 



gar, any mixture of aromatic oils with vinegar. It is 

 u.-ed as a stimulating agent. See Acetum. 



Aromin (ar-o'-min) [apu/ia, spice]. An alkaloid ob- 

 tainable from urine, after creatinin, etc., have been 

 removed from the mother-liquor. When heated it 

 emit- a fragrant odor. 



Arquatus (ar-kwa'-tus) [L., a rainbow]. Showing 

 several colors. A. morbus, an old name for jaun- 

 dice, from the discoloration of the skin ;' rainbow 

 disease. 



Arrack (ar'-ak) [Ind.]. Any alcoholic liquor is called 

 arrack in the East, but arrack proper is a liquor dis- 

 tilled from toddy, malted rice, 01 d.ites. 



Arrak (ar r -ak). See Arrack. 



Arrector (ar-ek'-tor) [I.., an erector]. A name applied 

 to certain muscles. A. pili Muscle, a fan like ar- 

 rangement of a layer of smooth muscular fibers ;ui 

 rounding the hair follicle, whose contraction erects 

 the follicle and produces cutis anserina or "goose- 

 skin." 



Arrest {ar-est') [a,/, to; > tare, to withstand]. Mop 

 page, detention. Arrested development, is when 

 an organ or organism fails in its normal evolution, 

 stopping at the initial or intermediate stages of the 



process. Arrested head, when in parturition the 

 child's head i- hindered but not impacted in the pelvic 

 cavity. 



Arrestation (ar-es-ta' '-shun) . Same a- Arrest. 



Arrhea (ah-re'-ah) [a priv.; poia, a flow]. The cessa- 

 tion or suppression of any discharge. 



Arrhenotocia (ar-en j . male; 



a bringing forth]. A formoi parthenogenesis in which 

 without coitus male eggs are deposited, as in bees. 



Arrhinia (ah-rin'-e-ah) . Same as Arhinia. 



Arrhizous (ah-ri'-zusj [a priv.; pl r a, a root]. In 

 biology, destitute of roots or rhi/oids, as parasitic 

 plant.-, certain mosses, hepatic. e, ,te. 



Arrhythmia (ah-rith' '-me-ah) [a priv. ; pvBfidg, rhythm]. 

 Absence pi rhythm; chiefly used in the expression ar- 

 rhythmia cordis, denoting irregularity or lack of rhythm 

 in the heart's action. See Can//,/. Rhythm. 



Arrhythmic (ah-rith' -mik) [a priv. ; pv6fi6c, rhythm]. 

 \\ ithout rhythm ; irregular. 



Arrhythmous (ah-rith' -mus). See Arrhythmic. 



Arrhythmy (ah-rith' -me) . Same as Arrhythmia. 



Arrow-poison (ar'-o-poi'-zuri). See Curare and Gua- 

 chamaco. 



Arrowroot (ar'-o-root) [ME., arow ; roote\ A kind 

 of starch derived from Maranta arundinacea of the 

 West Indies, Southern States, etc. It is a popular 

 remedy for diarrhea, and is widely used as a food. 

 Many other starchy preparations are sold as arrow- 

 root. 



Arsenate, or Arseniate (ar'- sen - at, ar - sc' ■ tie - at) 

 [arsenium]. Any salt of arsenic acid. Ferrous 

 arseniate, arseniate of iron, sparingly used in medi- 

 cine : it is the ferri arsenias of the 1». P. It is a 

 tasteless, greenish powder, combining the effects of 

 iron and arsenic; used largely in anemia and skin 

 diseases. ' Dose gr. A— \, 



Arseniasis (ar sen-i'-as is). Same as Arsenism. 



Arsenic, Arsenicum, or Arsenum (ar'-sen-ik, ar- 

 ea' -i/c uni, or ar-se'-num). As =75 ; quantivalence 

 in, V. A non-metal having a metallic luster and crys- 

 talline structure. In small doses it is a stomachic and 

 general tonic, promoting appetite 'and cardiac action, 

 and stimulating mental activity. It is of great value in 

 irritative dyspepsia, and is sometimes used internally to 

 blanch and clear the skin. In larger doses it creates 

 skin-eruptions and behaves as a violent corrosh e poison, 

 acting with cumulative effect. Externally, it is a pow- 

 erful escharotic, used in cancer. ( )nly the salts and 

 oxids are used in medicine. A. acid., arsenous acid, 

 white arsenic, " ratsbane," As. 2 O r Dose gr. ,',,-,'„. 

 A., acid., liquor. (Liq.arsenicihydrochlorici, I!. I'.), 

 a I per cent, solution of the acid in hydrochloric 

 acid and distilled water. Dose mjj-x. Ferri 

 arsenas, FejAs,0 8 . Dose gr. ,',., \. Liq. Ar- 

 senici hydrochlor. (1!. P.). Dose n\,ij-viij. Po- 

 tassii arsenit., Liq. {Liquor Arsenica lis, B. I'.). 

 Fowler's solution, contains A. acid 1, potass, bicar- 

 bonate I, comp. tinct. lavender 3, and distilled water 

 q. s. ad 100 parts. Dose mjj-x. Sodii arsenas, 

 Na,HAs0 4 .7H 2 0. Do-.'. .('the dried salt gr. *W*- 

 Sodii arsenat., Liq., Pearson's solution. Dose, 

 rr\^ij xv. A. iodid, Asl hose gr. J,,- 1 . A. et 

 hydrargyri iod., Liq., liquor of the iodid of arsenic 

 and mercury, Donovan's solution, contains A. iodid 

 I, mercuric iodid 1, distilled water loo parts. Dose 

 TTLij-x. A. bromas, AsBr, valuable in diabetes. 

 Dose gr. r ' lT . A. brom., Liq., Clemens' solution, a 

 one per cent, solution of the arsenite of bromin. Dose 

 IT\J— iv. The tests for arsenic are Fleitmann's, Marsh's, 

 and Reinsch's, for which see Tests, Table of. 



Arsenical (ar-sen'-ik-al) [arsenum, arsenic]. Per- 

 taining to arsenic. A. Devitalizing Fiber, used 



