DAS1 Rl W 'KA f'S Ml 1 11' 'I' 



354 



DEATH 



Dastre Morat's Method. 



Dasyma Sai 3 Hirsuh 



Date-disease. - D. -fever. Syn- 



onym of • 



Datisca [I .J. A genus of herbs, some 



wh . u D. cannabina. of Asia and 



the Levant, is antiperiodic and antiscrofulous. D. 

 glomerata 



Datiscin .■ !. < .11 \ starch 



lik- 1 from . cannabina; ii i> a good 



Datura [Hind., dhatura, a certain plant]. 



A , or night-shade family. D. 



stramonium. D. tatula, a ]>lant 



belonging to the nightshade family, closely resembling 

 unonium in its therapeutic and physiologic proper! 



It has been smoked with advantage in asthma. I nof. 

 Datunn [Hind., dhatura, a certain plant]. 



A dkaloid from the thorn-apple. See 



Daturism P-u-riztri) [Hind., dhatura, a certain 



antl. A morbid condition of mind and body in- 

 duced I jive dosing with stramonium [Datura); 

 ~tramonium-poisoning. It is nearly or quite identical 

 with at i • ipism. 



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

 Lin . D. Plane. ne. 



Daughter [davZ-ter) [AS., dohtor, daughter]. A 

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

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

 Ka is. D.-star, an amphiaster. See Karyo- 



kiti 



Dauvergne's Apparatus. An apparatus used fortreat- 

 . old dislocations of the shoulder. 



Davat"s Operation. See Operations, Table of. 



Davidsohn, Pupillary Reflex of. The light reflected 

 through the pupil in translumination, when the electric 

 light is held in the mouth. 



Daviel's Operation. See Operations, Table of. 



Davier d) [Fr.]. A tooth-forceps ; a lion-for- 



Ce; 



Davies and Dale's Carmin Mass. A warm flowing 

 in. I— for injecting tissues. Digest in a flask for thirty- 

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

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

 1) ami Il8 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- 

 iling, a solution of sodium carbonate until a 

 ipitate is produced. Boil and add to the 

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

 whi I on a white filter paper, should show no 



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

 and draw off tin- supernatant fluid with a siphon. 

 Wash, by decantation, until the wash water ceases to 

 He with barium chlorid. So much 

 ept with the color that it shall measure 

 11 For use soak 100 grams of gelatin in 750 



c< It over a water-bath. 



Davies-Colley Operations. See Operations, Table 



Davis's (Leon) Sign. See Death. 

 Davy's Method. ,,/, Methods of. D. 



Operation. < , Table of. D. Tests. 



Days Test. 



Day-Blindness. ,■ also Hemeral 



Daymare | mporary di I 



an ■ . bul 1 oming on 



w1 '' lought to be due to 



a<1 els of the brain. 



Dead 1]. Without life; desti- 



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

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

 an apartment in a public institution lor keeping 

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

 a voice without nasal resonance. The so-called nasal 

 voice. 



Deadly (ded'-le) [AS., </,.//, dead]. ( apable of caus- 

 ing death ; fatal ; mortal. D. Nightshade. See 

 Atropa and Belladonna. 



Deaf {def, or dlf) [AS., dedf, deaf]. Without the 

 sense of heanng. A condition of impaired hear- 

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

 fields, two small triangular planes, converging toward 

 the external auditors 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., dedf, 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 cochle;e, most marked at the base. D., Mind. 

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

 deafness in which, although musical sounds are heard, 

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

 called also Paracousia ll'illissii, 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 de- 

 struction of the auditory center (Munk). Sounds are 

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

 a variety of psychic deafness in which, although words 

 be heard, they are not comprehended. 



Death [deth) [AS., death, death]. The cessation of 

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

 state in which respiration and circulation are so feeble 

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

 fatal epidemic called the " Plague," which occurred 

 in Europe during the 14th century, during which it is 

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

 Catnass. D., Localized. See D. , Somatic. D., 

 Molecular, caries; ulceration. D.-rate, a term 

 arbitrarily expressing the mortality of a place, based 

 upon the number of deaths for each 1000 of population 

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

 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 of 

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

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

 Somatic, death of the organism as a whole, in dis- 

 tinction from localized D., or necrosis, and gangrene. 

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

 important as : I. Absence of the pulsation of the heart. 

 2. Absence of the respiratory murmur. 3. Pressure 

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

 irritability. 5. The ammonia hypodermatic test 

 (Afonteverde's sign). 6. Coagulation of the blood in 

 the veins. 7. Rigor mortis. 8. Decomposition. 

 Balfour's Test, a test for the action of the heart in 

 apparent death, lb- proposed sticking into the skin 

 over the heart needles having little paper flags fixed in 

 ir blunt ends. Should there be contraction of the 

 heart-nn uch movement would be commu- 



nii ated to the paper flags. CloqueC s Needle Test, 

 a bright needle plunged into the body of the 

 biceps muscle and left there for a time ; then ex- 



