VAN DER KOLK'S LAW 



1589 



VARICELLA 



diffusa, of S. America, is emetic and purgative, and 

 said to be useful in hepatic and intestinal diseases. 

 Dose of ext. gr. xv-xxiv. Unof. 

 an der Kolk's Law. See Law. 

 andyke Brown. See Pigments, Conspectus of. 

 an Gehuchten's Fixing Solution. See under Stains, 

 Tab: 



an Harlingen's Formula. A formula for the treat- 

 ment of acne rosacea. It consists of I dram of pre- 

 cipitated sulphur, with five grains of powdered cam- 

 phor, io of powdered gum tragacanth, and one ounce 

 ' each of rose-water and lime-water, 

 anilla (van-il'-ah) [L.]. The fruit of V. planifolia,an 

 orchid found in tropical America, and of other species 

 of the genus. Its odor is due to a methyl -ether, vanil- 

 lin. C 8 H 8 O a . It is an aromatic stimulant, sometimes em- 

 ployed in hysteria and low fevers, but it is used 

 chiefly as a flavor. V., Tinct., IO per cent. Dose as 

 desired. 



millin {van-il'-in) [vanilla, vanilla], C 8 H 8 3 . The 

 active and odorous constituent of the vanilla-bean 

 pods. It crystallizes in stellate groups of colorless 

 needles, is soluble in hot water, alcohol and ether, 

 and meks at ^o-8l° C. It has a warm x aromatic 

 taste. Commercial vanillin is in part prepared from 

 .he inner bark of white pine and from eugenol. Dose 

 ix. ' 2 . See Vanilla. 



inillism van-il'-izm) [vanilla, vanilla]. The symp- 

 oms among the workmen in vanilla-factories, due to 

 lie action oi the volatile principles cf vanilla. 

 " in Swieten's Liquid, or Solution. A solution of 

 is a local application to the secondary and tertiary 

 ns of syphilis about the head, face, and neck, and 

 also be taken internally. It is composed of the 

 wing: Corrosive chlorid of mercury 2 grains, 

 :iol 3 drams, distilled water sufficient to make 4 

 Of this one teaspoonful contains r *g- of a 

 n of corrosive sublimate. It has been used by 

 -onval in preparing glands (thyreoid, etc.) for ad- 

 ministration in organotherapy. 

 .To (yah'-o) [S. Am.]. A South American arrow- 



oison. 



\po-cresolin ra-po-kres f -o-lin) [vapor, vapor; creso- 



'«]. A popular remedy in the treatment of laryngeal 



iphtheria. 



^por (va'-por) [L. : gen., J'aporis; pi., Vapores\ 



he gaseous form of a substance which at ordinary 



-ratures is a liquid. In the B. P., certain vapores, 



nedicinal vapors, to be exhibited by inhalation, are 



rficiaily recognized. V.-bath, the application for 



lerapeutic purposes of steam (medicated or other- 



, or of some other vapor,, to the surface of the 



ody, in a suitable apartment or apparatus. V.- 



ouche, a jet of vapor impinging upon the surface 



f the body or some part thereof; used therapeutic- 



^oores uterini. Synonym of Hysteria. 

 ^Dorarium va-por-a'-re-um) [L.]. A Russian bath, 

 vapor-bath ; or an establishment or apparatus for 



ich baths. 

 "V wizable • -por- i' - za - 61) [vapor, vapor]. Cap- 



)le of being vaporized. 

 »x>rization - a-por-iz-a f -shun) [vapor, vapor]. The 

 which volatile matters are separated from 



ied substances by means of heat. The conversion 



, a solid or liquid into a vapor. 

 »K>rize (va'-por-iz) [vapor, vapor]. To reduce to 



ipor. 

 V>orizer (za'-por-i-zer) [vapor, vapor]. An atomizer, 



nebulizer. 

 ' 'orole r ■;■ 'por-ol) [vapor, vapor]. A friable, glass 

 mle containing a drug for inhalation. 



Vaporous (va'-por-u) [vapor, vapor]. I. Pertaining 

 to or consisting of vapor. 2. Arterial. 



Vapors (ya'-porz) [vapor, vapor]. Hypochondriasis ; 

 lowness of spirits ; hysteria. 



Variability (ya-re-a-bil ' -it-e) [yariare, to change]. In 

 biology, morphologic ind physiologic plasticity, or the 

 ability of the organism or race to adapt itself to its 

 environment 



Variation (va- re -a'- shun) [zariare, to change]. In 

 biology, morphologic or physiologic deviation from a 

 given type as the result of environment, natural selec- 

 tion, or cultivation and domestication. Cornevin 

 establishes the following list of the modes of variation 

 among animals : — 



Morphologic Variations 

 Variations through disap 

 pearance. 



•{ 



Variations through arrested 

 development. 



Variations through juxtapo- 

 sition. 



Variations through fusion. 



Variations through transfor- 

 mation. 



Variations 

 trophy. 



through hyper- 



Variarions through division 

 or repetition. 



II. Physiologic Variations. 



Variations through dimin- 

 ished activity. 



Variations through earlier 

 activity. 



Variations through exagger- 

 ated activity. 



Variations through stronger 

 activitv. 



Absence of horns, ears, 

 hair, pigment, etc. 



Total: Dwarfing, dis- 

 coloration. Part i al : 

 Niatism, partial dis- 

 coloration, reduction 

 in the number of 

 limbs, etc. 



Is seen in some hybrids 

 when the characters 

 of both progenitors 

 co-exist side by side. 



Diminished number of 

 ribs, teeth, digits, 

 vertebrae, etc. 



Wool replaced by hair, 

 scales replaced by 

 feathers, etc. 



Total : Giants, melan- 

 ism, extreme hairi- 

 ness. Partial : Droop- 

 ing ears, very long 

 horns, hairs or feath- 



- ers of unusual length. 



Supplementary verte- 

 brae. ribs. teeth, horns, 

 digits, etc. 



Lateness of develop- 

 ment : enfeeblement 

 of sexual tendencies ; 

 sluggishness. 



Precocity. 



Increase in fertility, 



etc. 

 Vigor, immunity from 



diseases, etc. 





To this list De Varigny adds Chemic Variation. 



V., Double, the double current produced in a muscle 

 by the passage of a single induction-shock. V., 

 Negative (of a muscle-current), the diminution of the 

 muscle-current caused by stimulation of the motor 

 nerve. 



Varicated (var'-ii-a-ted) [varix, varix]. Having 

 varices. 



Varication (var-ik-a'-shun) [varix, varix]. The for- 

 mation of a varix ; a system of varices. 



Varicella {var-is-el ' -ah) [dim. of variola, smallpox]. 

 An acute, specific, infectious disease of children, 

 popularly known as chicken-pox. It has an incuba- 

 tion-period of from eight to fourteen days, and is 

 rarely preceded by a premonitory stage of slight fever 

 and roseolous rash. This latter appears first on the 

 back or chest, as scattered, slightly elevated, round, 

 rose-colored spots ; these are quickly followed by an 

 eruption of glabrous, transparent vesicles, which ap- 

 pear in successive crops on different parts of the body — 

 there may be four or five of these crops — bursting the 

 third to the fifth day from their appearance, finally 

 leaving small , punctured scabs. There are general ly 

 but slight febrile symptoms. V. coniformis, swine- 

 pox ; varicella in which the vesicles are conic. V., 

 Conoidal. Same as /'. coniformis. V. gangraenosa. 



