

DEBILITANT 



355 



DECIDUA 



m—in*A for signs of oxidation. If found, life is pre- 

 sent. Davis's (Leo*) Sign, after death the arteries 

 are pale or yellowish, and empty of blood, 

 whilst daring life the vessels pulsate, and have 

 the color of the surrounding tissues. Diaphanous 

 Test, the scarlet -red color of the finger- edges 

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

 the blood circulating through the tissues. The 

 scarlet tint does not appear if life is extinct. The test 

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

 red coloration may be absent. Fillet Test: Richard- 

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

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

 fillet if death be present. Fouberfs Test consists in 

 oaring through one of the intercostal spaces and feeling 

 the heart with the point of the ringer. Laborde s Sign. 

 Same as Chtquefs Seedle Test. Larchers Sign, soon 

 after death the conjunctivae exhibit externally gray, 

 doody discolorations. that rapidly become black. They 

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

 cadaverk imbibition dependent on putrefactive changes. 

 Levasseurs Sign, the application of a scarificator and 

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

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

 tightly bound round with a ligature, the part beyond 

 ihe constriction will, if the person be living, become 

 it red, the tint increasing in depth until it finally 

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

 vhere the ligature is applied, a narrow 

 e ring becomes visible. Xo change results from 

 -- plication of the ligature if rife be extinct. Mon- 

 pt, the injection subcutaneously during tile 

 . little ammonia solution will be followed by a 

 vine congestion in m rn Minrfing parts, which does 

 jke place in case of death. Ripault Sign, during 

 the circular shape of the pupil is influenced by 

 mal p l easure only during its actual application. 



- life, however, external pressure is capable of 

 .anently affecting the normal roundness of the 



apillary aperture. D. Trance, trance that closely 

 i ssembles death. 



le-biP -it-ant) [debilitare, to weaken]. I. 



A medicine that weakens. 

 yiF-it-e). See Asthenia. 

 1 Dove' s Membrane. See Membrane. D. Method. 

 7-tatment, Methods of. 



:ement (da-bred' -mton{gj) [Ft., debridement]. 

 enlarging of a gunshot wound or a hernia with the 



- ; the slitting of any constricting tissue or band. 

 It miner's Tests. See Tests, Table of. 



: erous (de-has* -er-us) [drn, ten ; tipac, horn]. 

 i biology, having ten horn-like processes, tentacles 

 I -arms. 



'am \ def -a-grami) [dim, ten; ypauua, a certain 

 eight]. Ten grams or 154.32349 grains, 0.353 ounce 

 -dnpois. or 0.52 15 ounce troy. See Metric System, 

 rynous (deh-af-in-us) [dim, ten ; yw^, female], 

 ogy, with ten pistils. 

 '- ilcification je-kal-sif-ik-a'-shmn) [de priv.; calx, 

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

 f bone in some cases of osteitis. 

 uned Bone-Drain. A drainage-tube made of a 

 . dfied chicken-bone. 

 D alcify ■ de-haf -sif-i) [de priv. ; calx, lime; facere, 

 make]. To remove lime-salts from tissues pr evi o u s ly 

 k section-cutting for histologic examination. An add is 

 ■ oalfy combined with a hardening agent to pre v ent 

 ; dling of the tissues. The best decalcifying fluids 

 i i Arsenious Acid. Chromic Acid, Hydrochloric Add, 

 ' oner's Solution, Hydrochloric Add and Glycerin, 

 trie Add, Nitric Acid and Chromic Acid, Picric 

 See Reagents and Stains, Table of. 



Decalcifying Fluid (de-haP-sif-i-ingftu'-id). A solu- 

 tion used for the purpose of depriving tissue of its 

 calcium salts. Chromic acid I gram, water 200 c.c , 

 then add 2 cc nitric add, — is commended. 



Decaliter, Decalitre (deh'-a-le-ter) [dim. ten ; Aerpa, 

 a pound]. Ten liters, or 2i imperial gallons, or 2.04 

 L . S. gallons. See Metric System. 



Decalvant {de-haJ' -vant) [decahans, depilatory]. Re- 

 moving hair ; depilatory ; «-»"="»g baldness. 



Decametons (deh-am* '-er-us) [dim, ten ; uipoc, a part]. 

 In biology, ten-parted, as a flower. 



Decameter, Decametre (deh / -a-me-ter) [Stat, ten; 

 uirpoi; a measure]. Ten meters or 393.7 English 

 inches, or 32.8 feet. See Metric System. 



De Candolle, Canal of. See Canal. 



Decandrous {dek-an'-drus) [dam, ten; arr,p, male]. 

 In biology, having ten stamens. 



Decane (deh'-an) [dim, ten], C^ A hydrocarbon 

 of the paraffin series. 



Decantation {de-han-ta'-shnm) [de, down; cantms, a 

 side]. The operation of removing the supernatant 

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

 of a guiding-rod. or drawn off by means of a siphon. 



Decapetalous (dek-ap-ef-al-us) [dim, ten ; xrro/uw-, a 

 leaf]. In biology, having ten petals. 



Decaphyllous \deh-af-il-us) [<J«a,ten; pi vJior. a leaf]. 

 In biology, ten-leaved 



Decapitation (de-kap-it-a'-shun) [de, from; caput, 

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

 when delivery and v e r si on are both impossible. This 

 is sometimes called decollation. 



Decapitator (de-hap* '-it-a-tor) [de, from ; caput, head]. 

 An instrument used in performing decapitation. 



Decapod (dek'-a-pod) [dim, ten ; rare (red-), foot]. In 

 biology, having ten feet, rays, or arms. 



De Cassis' Operation. See Operations, Table of. 



Decay (de-haT) [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- 

 :: 



Dece's Operations. See Operations, Table of. 



Decentercd Lens (de-sen' -terd lens). I. A lens thicker 

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

 that the visual line does not pass through its center. 



Decentration (de-sen-tra'-shmn) [de, from ; centrum, a 

 center]. Removal from a center. 



Decephalization (de-sefal-i&-a'-shun) [de, away from ; 

 bkm>j}, head]. In biology, applied to retrograde 

 changes or simplification in the head parts. 



Dece r ebrated (de-ser'-e-bra-ted) [de, from ; cerebrum, 

 the brain]. Deprived of the c ere br u m ; 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 n»mt™ a certain 

 standard of purity in the atmosphere. It is as follows: 



<*'=-—; d = the volume of air to be delivered per 



hour in cubic feet ; e ■= the quantity of CO. that each 

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

 of impurity in a cubic foot of air. 

 Deodna tde-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. refUxa. D., Placental. See 

 D. serctina. D. reflexa, that part of the deddua 

 growing about the ovum and enclosing it as a sac. 

 D. serotina. that part of the deddua vera upon which 

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

 quently formed. D., Uterine. See D. vera. D. 

 vera, the thickened, vascular, spongy 

 brane of the gravid uterus. 



