DASTRE-MORAT'S METHOD 



354 



DEATH 



Dastre-Morat's Method. See Anesthetic. 



Dasyma [das'-im-ah). Same as Hirsuties. 



Date-disease. See Aleppo Boil. D. -fever. Syn- 

 onym of Dengue. 



Datisca (da-tis'-kah) [L.]. A genus of herbs, some- 

 what allied to the cacti. D. cannabina, of Asia and 

 the Levant, is antiperiodic and antiscrofulous. D. 

 glomerata is a Californian species. 



Datiscin [da-tit 1 '-in) [Datisca], C 21 H 22 ]2 . A starch- 

 like glucosid from Datisca cannabina ; it is a good 

 yellow dye. 



Datura (da-tu' '-rah) [Hind., dhatura, a certain plant]. 

 A genus of Solanacese, or night-shade family. D. 

 stramonium. See Stramonium. D. tatula, a plant 

 belonging to the nightshade family, closely resembling 

 stramonium in its therapeutic and physiologic properties. 

 It has been smoked with advantage in asthma. Unof. 



Daturin [da-tu' -rin) [Hind., dhatura, a certain plant]. 

 A poisonous alkaloid from the thorn-apple. See 

 A tropin. 



Daturism [daf -ii-riziri) [Hind., dhatura, a certain 

 plant]. A morbid condition of mind and body in- 

 duced by excessive dosing with stramonium {Datura); 

 stramonium-poisoning. It is nearly or quite identical 

 with atropism. 



Daubenton's Angle. See Angle. D. Line. See 

 Line. D. Plane. See Plane. 



Daughter (daiu'-ter) [AS., dohtor, daughter]. A 

 female child or descendant. D.-cell. See Cell. D.- 

 cyst, a cyst formed within a cyst. D. -nuclei. See 

 Karyokinesis. D.-star, an amphiaster. See Karyo- 

 kinesis. 



Dauvergne's Apparatus. An apparatus used for treat- 

 ing old dislocations of the shoulder. 



Davat's Operation. See Operations, Table of. 



Davidsohn, Pupillary Reflex of. The light reflected 

 through the pupil in transamination, when the electric 

 light is held in the mouth. 



Daviel's Operation. See Operations, Table of. 



Davier (dah f -ve-a) [Fr.]. A tooth-forceps ; a lion-for- 

 ceps. 



Davies and Dale's Carmin Mass. A warm-flowing 

 mass for injecting tissues. Digest in a flask for thirty- 

 six hours, at the ordinary temperature, 1 1. 6 grams of 

 carmin in a mixture of 15 c.c. of ammonia (0.92 

 strength) and 118 c.c. of water. Filter, and dilute 

 with water to 472 c.c. Dissolve 38.88 grams of po- 

 tassium alum in 295 c.c. of water, and add, with con- 

 stant boiling, a solution of sodium carbonate until a 

 slight precipitate is produced. Boil and add to the 

 carmin fluid, shaking vigorously. A drop of the fluid, 

 when placed on a white filter-paper, should show no 

 color-ring. Allow it to cool and settle for a day or two, 

 and draw off the supernatant fluid with a siphon. 

 Wash, by decantation, until the wash-water ceases to 

 give a precipitate with barium chlorid. So much 

 water must be kept with the color that it shall measure 

 1180 c.c. For use soak 100 grams of gelatin in 750 

 c.c. of this fluid and melt over a water-bath. 



Davies-Colley Operations. See Operations, Table 

 of. 



Davis's (Leon) Sign. See Death. 



Davy's Method. See Treatment, Methods of. D. 

 Operation. See Operations, Table of. D. Tests. 

 See Tests, Table of. 



Day's Test. See Tests, Table of. 



Day-Blindness. See Nyctalopia ; also Hemeralopia, 



Daymare [da'-?nar). A state of temporary distress 

 and terror, resembling nightmare, but coming on 

 when the patient is awake. It is thought to 1m- due to 

 a diseased state of the blood-vessel- of the brain. 



Dead \ded) [AS., dedd, dead]. Without life; desti- 



tute of life. D.-born. Still-born. D. Finger. See 



Sphaceloderma and Night-palsy . D. -house, a morale; 

 an apartment in a public institution for keeping 

 dead bodies. D. Nettle. See Lamium. D. Voice, 

 a voice without nasal resonance. The so-called nasal 

 voice. 



Deadly (ded'-le) [AS., dead, dead]. Capable of caus- 

 ing death; fatal; mortal. D. Nightshade. 

 Atropa and Belladonna. 



Deaf (defoxdef) [AS. , deaf deaf]. Without the 

 sense of hearing. A condition of impaired hear- 

 ing. D. -dumbness. See Deaf-mutism. D.- 

 fields, two small triangular planes, converging toward 

 the external auditory meatus, and in which the vibrat- 

 ing tuning-fork is not heard. D.-mute, one who 

 suffers from deaf-mutism. D. -mutism, a condition 

 of deafness or impaired hearing, accompanied by im- 

 perfect development (congenital), or loss of speech. 

 D. -points, some points near the ear in which a vibra- 

 ting tuning-fork cannot be heard. 



Deafness (def-nes) [AS., deaf deaf]. The condition 

 of being deaf; surdity. D., Boilermakers', chronic 

 labyrinthine deafness resulting from constant exposure 

 to loud sounds. Bone-conduction is impaired, and 

 there are destructive and atrophic changes throughout 

 the cochleae, most marked at the base. D., Mind, 

 See D. , Psychic. D., Music, a variety of psychic 

 deafness in which, although musical sounds are ! 

 they are not recognized as such. D., Paradoxic, 

 called also Paracousia Willissii, deafness for speech 

 in silence, but with ability, e. g., to hear the same 

 voice in a noisy car or street. This is said to be 

 caused by compression of the labyrinth. It is a form 

 of otopiesis. D., Psychic, the deafness from d< 

 struction of the auditory center (Munk). Souu 

 heard, but not recognized or understood. D., Word, 

 a variety of psychic deafness in which, although word> 

 be heard, they are not comprehended. 



Death (deth) [AS., death, death]. The cessati 

 life. D., Apparent, a term applied to a cataleptic 

 state in which respiration and circulation are so feebl 

 as to be inappreciable. D., Black, an exceeding 

 fatal epidemic called the " Plague," which occi 

 in Europe during the 14th century, during which it 

 estimated 20,000,000 people died. D. Camass. 

 Camass. D., Localized. See D. , Somatic. D.. 

 Molecular, caries; ulceration. D.-rate, a t< 

 arbitrarily expressing the mortality of a pla 

 upon the number of deaths for each 1000 of population 

 during a period of one year. D. -rattle, the p 

 culiar sound produced by the passage of air through 

 mucus in the throat of a dying person. D., Signs 

 of, certain indications of death, such as cessation 

 the heart's action, and respiration, vigor of the body, 

 healthiness of the tissues, etc. See D. , 7 

 Somatic, death of the organism as a whole, in di 

 tinction from localized D., or necrosis, and gangren 

 D., Tests of: Dr. Richardson summarizes the m 

 important as : I. Absence of the pulsation of the hear; 

 2. Absence of the respiratory murmur. 3. 

 on veins (Fillet test). 4. Electric test for inuscul 

 irritability. 5. The ammonia hypodermatic I 

 (Monti'vcrde's sign). 6. Coagulation of tin 

 the veins. 7. Rigor mortis. S. 

 Balfour's Test, a test for the action of tin 

 apparent death. He proposed sticking int< 

 over the heart needles having little paper flag 

 their blunt ends. Should there be contract] 

 heart-muscle, such movement would be comrm. 

 nicaled to the paper flags. Cloqucf 

 a bright needle plunged into the body of 

 biceps muscle and left then' for a time; then e* 



