DADI GOGO 



353 



LAKW 1M>.\1 



Dadi Gogo (dd / -de gtZ-gd) [African]. See Gogo. 



Daemonomania (de-mo-no-ma'-ne-an). See Demono- 

 mania. 



Daffy's Elixir. A compound aromatic tincture of 

 senna. \ no! 



Dahlia (dahl'-yah). See Pigm n ' ,/usof 



Dajaksch (di'-ahsh) [Java], ["he arrow poison used 

 in Borneo. It is believed to be distinct from the fava 

 arrow-poison. 



Dakryon [dah'-re-on). Sec Craniometrit Points. 



Dakryops [dak* -re-ops). Same as Dacrvops. 



Dalby's Carminative. An old empiric carminative 

 and mildly opiate mixture, answering nearly to the 

 mistura carminativa of tin- National formulary. It 

 contains about two and a half minim-- oi tincture of 

 opium to the Quidounce. 



Dalgarno Alphabet. Glove-alphabet ; a method of 

 manual communication among deaf-mutes, in which 

 the letters are indicated by touching various parts of 

 the hand. 



Dallas's Operation. See Operations, Table of. 



Dalmatian Insect Powder. See Buhach. 



Dalton's Theory. The atomic theory of compounds. 



Dalton-Henry Law. See Law. 



Daltonism {daP '-ton-izm) \_Dalton, a physician]. 

 Color blindness. See Blindness. 



Dam. See Rubber Dam and Coffer Dam. 



Damalic Acid (dam-al'-ik ). See Acid. 



Damaluric Acid [dam-al-u'-rik). See Acid. 



Damiana {dam-e-an f -ah). The leaves of Turnera 

 aphrodisiaca, found in Mexico and Lower California; 

 a stimulant tonic and said to be a powerful aphrodi- 

 siac. It is the basis of a great number of quack reme- 

 dies. D., Ext. Dose gr. ij-x. D., Fid. Ext. 

 Dose TTlx-^j. Dose of the leaves ^j daily. All 

 unot. 



Dammar (dam'-ar) [Hind., damar, resin] . A gum or 

 resin resembling copal, produced by various species 

 of Damtnara and by various other trees. D., True, 

 is obtained from the Dammara orientalis, a coniferous 

 tree, indigenous in the East Indies, and also from 

 Dammara australis, in New Zealand. The latter 

 variety is also known as Kauri, or cowdie resin. The 

 former is the variety commonly called dammar in 

 commerce. It occurs in masses, coated on the exte- 

 rior with white powder from mutual attrition, while 

 the interior is pale-amber colored and transparent. It 

 is harder than rosin, and splits and cracks at the tem- 

 perature of the hand. It is used in the manufacture 

 of varnishes. See Cowdie Gum. 



Damp. See Choke-damp ; Black-damp ; Dire-damp. 



Damping Apparatus. The union of the tympanic 

 membrane of the ear with the auditory ossicles acting 

 as a damper to prevent excessive sympathetic vibra- 

 tion for its own fundamental note. 



Dance (dans) [Ft., dauser, to dance]. Any measured 

 tread or system of steps accompanied by music. Also, 

 any motion of the body caused by an abnormal 

 nervous stimulus. D., St. Vitus's. See Chorea. D. 

 Plague. Synonym of Chorea. 



Dancel's Method. See Treatment, Me/hods of. 



Dancer's Cramp. SveCrawf. D. Palsy. See Daisy. 



Dancing Mania. See Choromania. 



Dandelion {dan'-de-li-on). See Taraxacum. 



Dandruff (dan'-druf). See Seborrhea. Pityriasis, and 

 Alopecia furfuracea. 



Dandy (dan'-de) [Hind., dandi, a boatman]. I. In 

 India, a kind of stretcher or hammock of canvas with 

 a bamboo frame. It is serviceable in the transportation 

 of the sick and wounded. 2. See Colic, Endemic. 

 D. Fever. See Den 



Danforth's Oil. See Naphtha. 

 2? 



Daniell [dan' vel) [Daniel/, an electrician]. A unit of 

 electric measurements equal to 1.124 volts. D. 



Cell. See Cell. 



Daniella [dan-e-el' '-ah) [I>r. Daniell, a traveler]. A 

 genus ol leguminou 1 W. Africa. D. thuri- 



fera. the only species ol this genus affording olibanum, 

 or true frankincense. 



Dantec, Bacillus of. See Bacteria, '/able of. 



Danube Fever [dan'-Ub fe'-ver). A febrile affection 

 oi remittent or relapsing type observed in sailors and 

 others that bav< on and have drunk the water 



of the Danube River, characterized by symptoms of 

 gastro intestinal derangemi at, albuminuria, hematuria, 

 edema, uremic symptoms, profit piration, en- 



larged spleen, and nervous symptoms. In precise 

 nature is unknown ; possibly it i- the same as Malta 

 fever, Rock ft Vt r, Cretan fe: terra nean fever. 



Daphne [daf'-ne) \6atyvri, the laurel]. A genus of thy- 

 melaceous shrubs, mostly poisonous or acrid. 

 Mezereon. 



Daphnetin [daf -net-in) [ddtpvq, the laurel], C 9 H 6 4 + 

 H 2 0. A substance obtained by the decomposition of 

 the glucosid daphnin. It crystallizes in yellow needles 

 or prism-, melting at 255 C. 



Daphnin {daf'-nin) \8atyvri, the laurel], < r ,"i>.' '• I 

 2H 2 0. I. A glucosid isomeric with esculin ; it is ob- 

 tained from the bark of Daphne alpina, and forms 

 prismatic transparent crystal- having a bitter taste 

 and melting at 200 C. 2. See also Pigments, Con- 

 spectus of. 



Darier's Disease. Psorospermose follictdaire vegetaut, ; 

 Keratosis follicularis : Ichthyosis sebacea cornea ; a 

 disease of the skin commencing on the face or trunk, 

 but ultimately spreading to other parts of the body, 

 and characterized by the development of papules of 

 small size and dirty-red color, with tirmly-adherent 

 grayish-brown, black, or gray horny crusts. These 

 crusts can be squeezed out of the papules by the 

 thumb-nails. In some places the lesions may become 

 confluent. The disease progresses slowly, and the 

 papules may assume considerable size. Ulceration of 

 their surfaces may occur, or the tumors may suppurate 

 en masse. The disease occurs usually in males. Its 

 etiology is obscure. See Diseases, Table of. 



Darnel (dar'-nel). See Lolium. 



D'Arsonval's Oven. See Oven. 



Dartoic. or Dartoid (dar-to'-ik, or dar'-toid) \faproq, 

 flayed]. Pertaining to or resembling the dartos. D. 

 Myoma. See Myoma. 



Darton's Test. See Tests, Table of. 



Dartos {dar'-tos) [daprdc, flayed]. The contractile 

 fibrous layer beneath the skin of the scrotum. 



Dartre (dar'-tr) [Fr.]. Any herpetic or other chronic 

 skin-disease ; a term vaguely used in French and the 

 older English medical literature. 



Dartrous (dar'-trus) [Fr. , dartre"]. Of the nature of 

 tetter or herpc< : herpetic. 



Dartsac (dart'-sak). A muscular sac containing a cal- 

 careous or chitinous dart or rod, opening into the clo- 

 aca of certain gasteropods. (Helix. ) 



Darwin's Ducts. See Ducts. D. Ear. See Ear, 

 Deformities of. Darwinian Tubercle, and Diseases, 

 ble of. D. Theory of Heredity. See Heredity. 



Darwinian Tubercle. A nodule or eminence some- 

 times seen on the edge of the helix of the ear ; it is 

 believed to be a relic corresponding to the point of 

 an ape's ear. 



Darwinism [dar / -win-izm). [Named after Charles 



Darivin, a celebrated naturalist]. The theory of de- 



scent by evolution, as modified by the doctrine of the 



survival of the fittest. See Neo- Darwinism and 



iution. 



