INDIAN 



609 



INDIVIDUAL 



chieflv for its elasticity and its insolubility in water. It 

 is with difficulty soluble in oil of turpentine, but is highly 

 soluble in carbon disulphid. It melts at 248 F. , and 

 remains unchanged up to 500 F. It is hardened and 

 in mechanical dentistry as a base for artiricial 

 teeth. It is also called Caoutchouc, q. v. 

 ndian (in'-de-an) [India]. Pertaining to India, the 

 Indies, or to the aboriginal Americans. I. Bas- 

 ket, a hollow cylinder woven of twigs of the willow, 

 or of strips of other wood, used in applying extension to 

 a dislocated limb. The greater the extension, the more 

 firmly does the device cling to the surface. I. -blue. 

 as Indigo. I . Black-root, the root of Pterocaulon 

 •tachium. It has reputed alterative properties. 

 Dose of the fluid extract mjiv-xxx. Unof. I. Corn. 

 Zea mays. I. Hemp. See Cannabis. I. Liquo- 

 rice. See Abrus. I. Physic, American Ipecac- 

 uanha, the bark of the root of Gilknia trifoliata, a 

 mild emetic and cathartic. Dose of the fluid extract, 

 n\_x-xl. Unof. I. Sarsaparilla. See Hemidesmus. 

 I. Tobacco. See Lobelia. I. Turnip. See Dragon 

 Root. I. Madder. Same as Mungeet. I. Meal, 

 com-meal. I. Ochre. Same as Ochre. I. Plague. 

 aym of the Plague, q. v. I. Potato. See 

 I. -purple. See Pigments, Conspectus of. 

 I. -red. Same as Colcothar and Ochre. I. -yellow. 

 Same as Purree. 

 ndican in'-dik-an) [indicum, indigo], C^H^NOu- 

 The natural glucosid by the decomposition of which 

 indigo-blue is produced from the various species of 

 indigo-producing plants. It forms a transparent brown 

 syrup, the aqueous solution of which has a yellow 

 color, bitter taste, and slightly acid reaction. It is 

 occasionally detected in the urine, 

 indicant \in' -dik-ant) [indicans ; indicare, to indicate]. 

 1 . Serving as an index or as an indication. 2. A fact 

 or symptom that indicates a certain treatment ; an indi- 

 cation. 



ndicanuria [in-dik-an-u' -re-ali) [indicum, indigo; 



.urine]. The morbid excess of indican in the urine. 



ndication [in-dik-a' -shun) [indicatio, an indication]. 



A sign or symptom, especially when it points out the 



proper course of treatment ; the inference drawn from 



the various symptoms or signs in any particular case. 



ndicator iin'-dik-a-tor) [indicare, to point out]. I. 



The index -finger. 2. The extensor indicis muscle. 



See Muscles, Table of. 



ndicium \in-dish f -e-um) [L. : //., Indicia]. A symp- 

 ; torn or sign ; a discriminating or diagnostic mark, 

 ^different in-dif '' '-er-ent) [in, not ; differens, differ- 

 ent]. 1. Not specially differentiated. 2. Not acted 

 in a special way by any reagent. 

 erentism in-dif f -er-ent-izm) [in, not; differens, 

 'Unerent]. Lack of special differentiation, 

 idifulvin (iti-de-ful ' -vin) [IvSikov, indigo ; fulvus, 

 w]. A yellowish substance occurring in two vari- 

 ed produced by the action of dilute acids on 

 an. 



:scin {in-de-fus'-in) [IvcIik6v, indigo ; fuscus, 

 dark]. C. 4 H w N,0 9 . A substance produced by the ac- 

 i tion of dilute acids on indican. 

 idigenous (in-dif -en-us) [indu, in ; gignere, to be- 

 Native, and not exotic. Originating or belong- 

 ing to a certain locality or countrv. 

 ^digestion [in-di-jes'-chun) [i'ndigestio : in, not; 



ere, to digest]. Same as Dyspepsia. 

 idignation l in-dif it-a' -shun) [in, in ; digitus, a fin- 

 Ser]. A displacement of a part of the intestine by in- 

 ception, 

 jidiglucin \in-de-glu'-sin) [IvSikov, indigo; y/.vKic, 

 e f]> C s H 10 O g . A yellow syrup, one of the decom- 

 ' P^ion-products of indican. 

 39 



Indiglycin (in-de-gli'-sin). Same as Indiglucin. 

 Indigo (in'-dig-o) \\v6ikov, indigo]. A blue pigment 

 formed during the fermentation of Indigo/era anil, I. 

 tinctoria, and other species. It is insoluble in alcohol 

 or water, but freely soluble in strong sulphuric acid ; 

 it is used mainly in the arts as a dye-stuff. Chemic- 

 ally, it is a mixture of several principles, the chief 

 being a blue coloring -matter, indigotin. Therapeutic- 

 ally, it is an irritant to the mucous membrane of the 

 alimentary tract, producing intense nausea. It has 

 been used advantageously in epilepsy, chorea, and 

 convulsions, in doses varying from 5 ij— J ij daily. 

 Unof. I. -blue, Cj 6 H 10 N,O r Indigotin ; a chromo- 

 gen found in ordinary indigo, of which it constitutes 

 the principal ingredient. It is also derived from 

 wood (Isatis tinctoria). It occurs in the plant as 

 a glucosid, indican. Indigo-blue is a dark-blue pow- 

 der with a reddish glimmer ; it becomes metallic and 

 copper-like under pressure. It is insoluble in water, 

 alcohol, and ether, and is odorless and tasteless. It 

 dissolves in hot anilin with a blue color, and crystallizes 

 from hot oil of turpentine in beautiful blue plates. 

 I. -brown, a resinous substance of a brown color, ob- 

 tained by boiling an aqueous solution of indican with 

 an acid. It is composed of a mixture of indihumin , 

 C, H 9 NO 3 , and indirhetin, C 18 H 1T N0 5 , the former 

 soluble and the latter insoluble in alcohol. I.-car- 

 min, a sodium salt of indigotin-disulphonic acid ; it 

 is used as a blue dye, a washing-blue, and is a delicate 

 test for sugar. I.-carmin Test for Sugar ; put 

 in 30 minims of water one part each of' indigo-carmin 

 and sodium carbonate ; heat gently to solution ; add 

 one drop of urine, and boil quietly. A change to red 

 or yellow indicates sugar. See Tests, Table of. I. 

 Extract. See Indigo-carmin. I.-red. See Indi- 

 rubin. I. -white, C 16 H„N 2 2 . Indigogen; a sub- 

 stance obtained by the reduction of indigo-blue. It 

 occurs as a white crystalline powder, soluble in alco- 

 hol, ether, and the alkalies, with a yellowish color. 

 It rapidly reoxidizes to indigo-blue by exposure to the 

 air. I., Wild. See Baptisia. 



Indigogen (in'-dig-o-Jen). See Indigo-white and Uro- 

 xanthin. 



Indigotin (in-dig-cr'-lin). See Indigo-blue. 



Indigouria (in-dig-o-u' '-re-ah) [Udinov, indigo ; ovpov, 

 urine]. The presence of indigo in the urine; it is 

 due to a decomposition of indican. See Cyanurin. 



Indihumin (in-de-hu' -miri). See Indigo-broken. 



Indirect (in-di-rekt r ) [in, not ; dirigere, to be in a 

 straight line]. Not direct. I. Division of Cells. 

 See Karyokinesis. I. Segmentation. See A'aryo- 

 kinesis. I. Vision, that perception of an object in 

 which the image falls on some other spot than the 

 macula. 



Indirhetin (in-dir-e'-fin). See Indigo-brown. 



Indirubin (in-de-ru' '-bin) [I vfiinov, indigo ; rubt<m,red], 

 C, 6 H 10 N 2 O 2 . A substance isomeric with indigo- 

 blue, and very similar in its entire character to this 

 substance. It is produced by effecting the conden- 

 sation of indoxyl with isatin by means of a dilute 

 soda-solution. It is also called indigo-red. 



Indisin [in'-dis-iri). Same as Mauvein, q. v. 



Indisposition (in-dis-po-zish' -un) [indispositio, unsuit- 

 ableness]. Any slight illness or disturbance of the 

 functions of the body. 



Indissoluble (in-diY-o-lu-bl). See Insoluble. 



Indium iin'-d-:-um) [itulicum, indigo, so-called from 

 its indigo-blue spectral line]. A rare metal. Symbol 

 In., atomic weight, 1 13. 7. It is very soft, and resem- 

 bles lead in its properties. See Elements, Table of. 



Individual (in-div-id'-u-al) [in, not; dividere, to di- 

 vide] . A single being ; one of a group or species. 



