DIPHTHERIA 



2-21 



DISC 



the West Indies. D. salicifolia, A. DC, furnishes 

 galimata or white balata. 



Diphtheria. (See Illus. Diet.) Syn., Ukera syriaca 

 (Aretseus, 70 A.D. ); Ulcera pestifera in tonsillis 

 (Paulus .Egineta, 680 A.D. ,; Angina puerorum epi- 

 demica (Bartholinus, 1646.; Angina maligna (Here- 

 dia, 1673 1 ; Putrid sore throat attended with ulcers 

 (Fothergill, 1748); Diphtheric (Bretonneau, 1821). 

 D., Bretonneau's, diphtheria of the pharynx. D., 

 Bronchial, that form in which the false membrane 

 extends into the air-passages. D., Buccal, that in 

 which the pseudomembrane is confined to the mucosa 

 of the cheek and gums. D., Conjunctival, diph- 

 theritic conjunctivitis. D., False. See Pseudodtph- 

 theria (Illus. Diet.). D., Faucial, that form in which 

 the false membrane is confined to the fauces. D. of 

 the Mouth. See D., Buccal. D. sine diphtheria, 

 a diphtheric infection unaccompanied by "false 

 membrane." D., Toxin, a toxalbumin produced by 

 Bacillus diphtheria, destroyed by a temperature over 

 6o° C, and capable of causing in susceptible animals 

 the same phenomena induced by inoculation with the 

 living bacilli. D. of Wounds, the formation of 

 pseudomembrane on the surface of wounds, but not 

 necessarily due to diphtheric infection. 



Diphthericide (dif-ther'-isid). A proprietary prophy- 

 lactic against diphtheria, said to consist of thymol, 

 sodium benzoate, and saccharin. 



Diphtherin (dif'-ther-in). See Diphtheria Toxin. 



Diphtheroid. (See Illus. Diet.) 2. A general term 

 for all pseudomembranous formations not due to Bacil- 

 lus diphtheria. 



Diphtherotoxin (difther-o-toks' '-in). See Diphtheria 

 Toxin. 



Diplegia. (See Illus. Diet. ) D. facialis, double facial 

 paralysis. Paralysis of the portio dura on both sides ; 

 the face remains expressionless, there is no distortion 

 under emotion, the patient laughs or cries behind a 

 mask. It is caused by a new-growth or gumma in- 

 volving both nerves at their origin, or by disease affect- 

 ing the two petrous bones separately or by the action 

 of cold upon both sides of the face in succession. D., 

 Spastic Cerebral (of infancy). See Disease, Little's 

 (Illus. Diet). 



Diploblastic (dip-lo-blas' '-tik) \6i-76or, double ; 3/.ao- 

 roc, a germ]. Having two germinal layers,. 



Diplocardiac (dip-lo-kar* '-de-ak) [d~t-7.6or, double ; mp- 

 &ia, heart]. Having a double heart. 

 )locephalia (dip-lo-sef-al'-e-ah) [di-z/ooc, double; 

 too.'/ 1,, the head]. A monstrosity marked by the 

 presence of two heads on one body, 

 plocephalus (dip-lo-sef '-al-us). A monster with a 

 ingle body and two heads. 



biogenesis. (See Illus. Diet.) 2. The process 

 described by Pigne in 1846 whereby congenital tumors 

 ire formed by the inclusion of embryonic remains. 

 Jlomeric (dip-lorn' -ur-ik) [61— ?.6oc, double; uepoq, a 

 part]. Applied to muscles arising from two myotomes ; 



g., the supraspinatus and infraspinatus muscles. 



slopia, Diplopsis, Diplopy. (See Illus. Diet.) D., 



lasal. See D., Crossed (Illus. Diet.). D., Tem- 



:>ral. See D., Homonymous (Illus. Diet). D., 



Vertical, diplopia in which one image is seen above 



the other. 



Diplopsic (dip-lop' -sih). See Diplopic (Illus. Diet.). 



Dipolar (di-p</-lar). See Bipolar (Illus. Diet.). 



Dipropyl idi-pro'-pil). A double molecule of propyl. 

 D.-carbinol, heptyl alcohol. D. -ketone. See Buty- 

 rcne (Illus. Diet.). D. -methane. See Heptane 

 (Illus. Diet.). 



Dipsorrhexia (dip-sor-ehs'-e-ah) [diiba, thirst ; bpeS /c, 

 appetite]. Thebault's term for that early stage of alco- 



holism in which no organic lesions have as yet appeared 

 in consequence of the alcoholic poisoning, but when 

 the appetite has been developed. 



Dipteryx odorata, Willd. iSee Illus. Diet.) The 

 seeds are stimulant, antispasmodic, and antiseptic ;. 

 used in whooping-cough and for flavoring. Dose of 

 fl. ext., 5-30 tr\, (0.3-1.8 c.c). 



Dipylidium (di-pi-lid'-e-um) [dcri/oc, with two en- 

 trances]. A genus of parasitic platode worms. See 

 Parasites, Table of (Illus. Diet.). 



Diradiation (di-ra-di-a' -shun) \diradiare, to diverge in 

 rays]. See Actinobolia. 



Diremption (di-remp'-shun) \dirimere, to separate]. 

 See Chorisis (Illus. Diet.). 



Disacidify (dis-as-id'-e-fi) {_dis, priv. ; acidify']. To 

 remove the acid from a substance. 



Disc. (See Illus. Diet.) D., Amici's. See Mem- 

 brane, Krause' s (Illus. Diet.). D., Anisotropous. 

 See D., Sarcous. D., Becquerel's, an apparatus for 

 estimating the difference in temperature between a 

 sound limb and a paralyzed one. D., Bowman's. 

 See Sarcous Elements (Illus. Diet.). D., Choked 

 (see Illus. Diet.), Leber's Theory of, that it has its 

 origin in an irritation due to the existence in the cere- 

 brospinal fluid of toxic elements introduced by intra- 

 cranial tumors or inflammations. D.. Contractile, 

 D., Dark. See D., Sarcous. D , Engelmann's 

 Intermediate. See Membrane, Krause' s (Illus. 

 Diet. '. D., Englemann's Lateral. See D., Inter- 

 stitial. D., Epiphyseal, the broad articular surface 

 with slightly elevated rim on each end of the centrum 

 of a vertebra. Syn., Epiphyseal plate. D., Equa- 

 torial. See Plate, Equatorial (Illus. Diet.). D., 

 Hensen's. See Engelmann's Middle Disc (Illus. 

 Diet. 1. D., Intermediate. See Membrane, Krause s 

 (Illus. Diet.). D., Interpubic. See Jnterpubic Discs 

 (Illus. Diet.). D.s, Interstitial, the more translucent 

 cementing substance conjoining the sarcous elements, 

 and to which the lighter narrower strias of the muscle- 

 fiber and the intervals of the fibrils are due. Syn., D., 

 Isotropous ; D., Lateral; D., Light; Englemann's 

 lateral discs. D., Intervertebral. See under Inter- 

 vertebral (Illus. Diet.). D., Invisible. See Cor- 

 puscles, Korris' Invisible (Illus. Diet.). D., Isotro- 

 pous, D., Lateral, D., Light. See D., Interstitial. D., 

 Krause's. See Membrane, Krause 's (Illus. Diet. \. 

 D., Median, D.. Middle. See Englemann's Middle 

 Disc (Illus. Diet.). D., Nuclear. See Plate, Equa- 

 torial (Illus. Diet). D., Optic. See Disc (Illus. 

 Diet.). D., Ovigerous. See Discus proligerus 

 (Illus. Diet.). D., Placido's, a keratoscope com- 

 posed of a disc with concentric circles. D., Princi- 

 pal. See D., Sarcous. D., Ranvier's. See under 

 Ranvier (Illus. Diet.). D., Sarcous, the dark, 

 broad, transverse stripe of striated muscle-fiber; it is 

 anisotropic and supposed to represent the proper con- 

 tractile substance of the fiber. Syn., D., Dark ; D., 

 Anisotropic; D., Contractile; D., Principal; D., 

 Transverse. D., Schiefferdecker's Intermediate, 

 the substance which is assumed to fill in the space ex- 

 isting at Ranvier's nodes between Schwann's sheath 

 and the axis-cylinder. It appears as a black line on 

 staining with silver nitrate and forms the horizontal 

 branch of Ranvier's Latin cross. D., Slender. See 

 D., Membrane, Krause's (Illus. Diet.). D., Steno- 

 peic, a lens allowing the passage of light rays only 

 through a straight narrow slit; it is used for testing 

 astigmatism. D.s, Strobic, revolving discs drawn 

 with concentric circles. D., Tactile, D., Terminal. 

 See Meniscus, Tactile, and Ranvier s Tactile Discs 

 (Illus. Diet.). D., Transverse. See D., Sarcous. 

 D., Vitelline. See Discus proligerus (Illus. Diet). 



