Ii] Kill I ANT 



:;:,:, 



DECIDl A 



amined for signs of oxidation. If found, life is pre- 

 sent. Davis's {Leon) Sign, after death the arteries 

 are pale or yellowish, anil empty of blood, 

 whilst during life the vessels pulsate, and have 

 the color of the surrounding tissues. Diaphanous, 

 Test, the scarlet-red color of the fingei edges 

 when held toward the light, due, il life exists, to 

 the blood circulating through tin- ti- I be 



scarlet tint doc- not appeal ii life i- extinct. Tin I I 

 is not to be relied on in all cases, as in syncope the 

 red coloration may be absent. Fillet Test: Richard- 

 son's Test, a fillet applied to the veins of the arm will 

 not cause lilling of the veins on the distal side of the 

 fillet if death he present. Fouberfs Test consists in 

 cutting thn mgh one of the intercostal spaces and feeling 

 the heart with the point of the linger. Labor de' s Sign. 

 Same as Cloquef s Needle lest. I. archer's Sign, soon 

 after death the conjunctivae exhibit externally gray, 

 cloudy discoloration*, that rapidly become black. /I 

 are due either to the formation of films of mucus, or to 

 cadaveric imbibition dependent on putrefactive changes. 

 Levasseur s Sign, the application of a scarificator and 

 cupping-glass will fail to draw blood if life has been ex- 

 tinct for some hour*. Magnus's Sign, if a finger be 

 tightly bound round with a ligature, the part beyond 

 the constriction will, if the person be living, become 

 bright red, the tint increasing in depth until it finally 

 assumes a uniformly bluish-red color. At the spot, 

 however, where the ligature is applied, a narrow 

 white ring becomes visible. No change results from 

 the application of the ligature if life be extinct. Mon- 

 teverde 's Sign, the injection subcutaneously during life 

 of a little ammonia solution will be followed by a 

 port-wine congestion in surrounding parts, which does 

 not take place in case of death. Ripault Sign, during 

 life the circular shape of the pupil is influenced by 

 external pressure only during its actual application. 

 After life, however, external pressure is capable of 

 permanently affecting the normal roundness of the 

 pupillary aperture. D. Trance, trance that closely 

 resembles death. 



Debilitant {de-bi/' -it-ant) \_debilitare , to weaken]. I. 

 Weakening. 2. A medicine that weakens. 



Debility (de-oil' -it-e). See Asthenia. 



Debove's Membrane. See Membrane. D. Method. 

 See Treatment, Methods of. 



Debridement [da-brid / -mon{g)) [Fr., debridement^. 

 The enlarging of a gunshot wound or a hernia with the 

 knife ; the slitting of any constricting tissue or band. 



Debrunner's Tests. See Tests, Table of. 



Decacerous {de-has' -er-us) [(Una, ten ; nkpac, horn]. 

 In biology, having ten horn-like processes, tentacles 

 or arms. 



Decagram {dek / -a-gram) [deica, ten; xpaupa, a certain 

 weight]. Ten grams or 15 \. 32349 grains, 0.353 ounce 

 avoirdupois, or 0.3215 ounce troy. See Metric System. 



Decagynous [dek-aj' '-in-us) [Skua, ten ; ; m/,, female]. 

 In biology, with ten pistils. 



Decalcification (de-hal-sifih-a'-skun) [de priv.; calx, 

 lime; facere, to make]. The loss of the lime-consti- 

 tuent of bone in some cases of osteitis. 



Decalcified Bone-Drain. A drainage tube made of a 

 decalcified chicken-bone. 



Decalcify [de-kal f -sif-i) [de priv. ; calx, lime; facere, 

 to make]. To remove lime-salts from tissues previously 

 to section-cutting for histologic examination. An acid is 

 usually combined with a hardening agent to prevent 

 swelling of the tissues. The best decalcifying fluids 

 are Arsenious Acid, ( Ihromic Acid, I [ydrochloric Acid, 

 Exner's Solution. Hydrochloric Acid and Glycerin, 

 Nitric Acid, Nitric Acid and Chromic Acid, Picric 

 Acid. See Reagents and St, tins, Table of. 



Decalcifying Fluid {de-kal , -sif-i~ingflu , -id'). A solu- 

 tion used lor the purpose oi depriving tissue of its 

 calcium salts. < bromic acid 1 fjram, water 200 c.c, 

 then add 2 c.C. nitric acid, — is commend 



Decaliter, Decalitre [dek'-a-le-ter) [dt/ca, ten ; \vrpa, 

 a pound]. Ten lit. ! ! gallons, or . 



I . S. gallons. See Metru Sy tern. 



Decalvant [de-kal' '-vant 1 [decal; an , depilatory]. Re- 

 moving hair; depilatory; causing baldnes 



Decamerous [dek-am'-er j a, tin ; pipoc, a part]. 

 In biology, ten-parted, as a flower. 



Decameter, Decametre (dek' -a-me-ter) [6kna, ten; 

 fiirptjv, a measure]. Ten met'. ;.; English 



inches, or 32. S feet. See Metric System. 



De Candolle, Canal of. See Canal. 



Decandrous {dek-an' '-drus) [Sena, ten; avi/p, male]. 

 In biology, having ten stamens. 



Decane (dek'-an) [Sena, ten], <' 10 II.,.,. A hydrocarbon 

 of the paraffin serie-. 



Decantation (de-kan-ta'-shun) \_de, down; cantus, a 

 side]. The operation of removing tin: supernatant 

 fluid from a sediment. It may be poured ofl by means 

 of a guiding r< d, or drawn off by means of a siphon. 



Decapetalous {dek-ap-ef '-al-us) [dena, ten; rr 

 leaf]. In biology, having ten petals. 



Decaphyllous \dek-,if -il-us) [ \7u0v, a leaf]. 



In biology, ten-leaved 



Decapitation [de-kap-it-a'-shun) \_de, from; , 

 head]. Division of the neck of the child in labor, 

 when delivery and version are both impossible. 1 bis 

 is sometimes called decollation. 



Decapitator [de-kap> '-it-a-tor) [de, from ; caput, head]. 

 An instrument used in performing decapitation. 



Decapod {dek f -a-pod} [deica, ten ; Trove (wod- ), foot]. In 

 biology, having ten feet, rays, or arms. 



De Cassis' Operation. See Operations, Table of. 



Decay {dc-ka') [de, down; cadere, to fall]. I. Putre- 

 factive change. 2. The ultimate catabolic state ; de- 

 cline of life, of health, or of any one or more func- 

 tions. 



Dece's Operations. See Operations, Table of. 



Decentered Lens {de-sen' '-terd lenz). 1. A lens thicker 

 at one side than at the other. 2. A lens so mounted 

 that the visual line does not pass through it- center. 



Decentration {de-sen-tra / -shun\ [de, from ; centrum, a 

 center]. Removal from a center. 



Decephalization {de-sef-al-iz-a' -shun) [de, away from ; 

 Kfon'/rj, head]. In biology, applied to retrograde 

 changes or simplification in the head part-. 



Decerebrated (de-ser' '-e-bra-ted) [de, from; cerebrum, 

 the brain]. Deprived of the cerebrum; said of birds 

 and other animals that have been thus vivisected for 

 observational study. 



De Chaumont's Formula. A formula for determining 

 the volume of pure air necessary to maintain a certain 

 standard of purity in the atmosphere. It is as follow.- : 



g 



d = — ; d = the volume of air to be delivered per 



hour in cubic feet ; f = the quantity of C< >._, that each 

 person is assumed to evolve per hour ; p = the amount 

 of impurity in a cubic foot of air. 

 Decidua [de-sid' '-u-ah) [deciduus, a falling off]. The 

 membranous envelop of the ovum derived from the 

 mother and cast off at birth with the placenta, etc. 

 D., Ovular. See D. reflexa. D., Placental. 

 D. serotina. D. reflexa, that part of the decidua 

 growing about the ovum and enclosing it as a sac. 

 D. serotina, that part of the decidua vera upon which 

 the 1 ovum lies, and from which the placenta is subse- 

 quently formed. D-. Uterine. See D. vera. D. 

 vera, the thickened, vascular, spongy mucous mem- 

 brane of the gravid uterus. 



