I»I« 'ITKAI. 



376 



DIPHYCER< \I 



Dioptral watchman] Pertain- 



ing >trj ; i- n dioptric s. 



Dioptre 



Dioptric through ; 



i. Pertaining to transmitted and refracted light 

 A 



Dioptrics . i" seel. 



A bran lion of light 



bj transparent i bj the media of the 



Dioptrv to see]. 



The m 1 unit of measurement 



...-) spherical 1 1 > i - 

 dioptry :. al distance of one 



in. • tries, .i focal distance of one- 



hall' .1 ii. U-lenses. 



Diorthos.- [ ,! <<j. throughout; bpd6t . t>> 



■n]. I he surgical correction of a deformity, 

 or i .in injur] 



Diorthotic [did, throughout ; bpddeiv, to 



• >r effecting a diorthosis. 

 Dioscorea .;//) [Dioscorides, a fam.>u- 



■I an.l botanist]. Wild Vam, Colic 

 of D. villosa, a creeping-plant, 

 in.: stem U. S. It is claimed to be ex- 



int, diapb ind stimulant to the intestinal 



al, in causing neuralgic pains and 



ut. It is used successfully for bilious 

 D., Fid. Ext., of standard strength, dose 

 rr\_\v-.w\. Unof. 

 Dioscorein i it '-. i ■ko'-re-in) [Dioscorides, a Greek bot- 

 anist]. A precipitate from a tincture of the root of 

 lr i- antispasmodic, expectorant, 

 and tic. Dose 5^ to 4 grains. Unof. 



Diosma [dtoc, divine; 6a/i^, odor]. Buchu. 



Diosmin divine; offfiij, odor]. An 



ibtained from various species of Buchu. 

 It is . bitter substance. Unof. 



Diosmosis Same as Osmosis. 



Diotic . car]. Binaural ; 



th ears. 

 Dioxid it ks'-id) [die, twi -harp]. An oxid 



and one of a metal. 

 Dipentene ' , H, g . Cinene ; a compound 



. camphor, and limonene 



It 1- present in the Russian and 



til. It is a Liquid with an agree- 



ab' g] . ,.s; 5 ; boils at 1 75 — 



Dipetalous [dtc, two; . a leaf ]. 



Dipheny . purple red], Ci- 



ting Ire .111 the action of sodium 

 ether or benzene. 

 It 1 itallizes from ah 



1-. melting at 71' I 



D. -methane, ( ',,1 1,.- Benzyl 



! from benzyl chlorid 



uble in alcohol and ether, 



- in needles. 



■ 



Diphenylamin ,.,,/.• amiri\, 



' 1 in the dry distilla- 



inilin blue. ; it is 



■ ! anilin to 

 m pound, 

 i mo 



D. Orange. 

 Diphenylol 



obtained by diazotizing amido dipheny] sulphate. It 



sublime^ in shining leaflets, nicking at 105 ('., and 

 boiling at .i°5-' s ° C. 



Diphosphate it-id) [di, twice ; phosphorus]. 



Any phosphatid containing the phosphorized radical 

 twice (such irin). Diphosphatids exist in the 



ain-substance and in other animal tissues. 



Diphtheria [dif-, or dip-the* '-re-ah) [dupdepa, a skin or 

 membrane]. An acute, epidemic, infectious disease, 

 generall) regarded as ol specific contagious origin, 

 attacking especially the mucous membrane of the air- 

 passages, and producing profound depression of the 

 vital forces. It is characterized specifically by the 

 formation of layers of whitish oryellowish membrane 

 upon the mucous membrane of the pharynx, 

 nose, and larynx, and upon any existing cutaneous 

 abrasion. The duration of the disease is from one to 

 two weeks, death, when it follows, occurring usually 

 within a week. There are certain grave sequehe 

 that must be noted; chief among these are various 

 forms of paralysis, especially of the palate. The 

 prognosis is always grave. To stain the microorgan- 

 isms of diphtheria see Loffler's Method, Gram's 

 Mr/hod, — a fragment of false membrane being spread 

 on a cover-glass, dried, and otherwise treated as a 

 cover-glass preparation. D., Antitoxin Treatment 

 of, the treatment of diphtheria with subcutaneous in- 

 jections of the blood-serum of animals, and more es- 

 pecially the horse, rendered immune to diphtheria by 

 previous and repeated inoculation with progressively 

 increasing doses of the toxic products of the bacillus 

 diphtheric D. circumscripta, a peculiar form of 

 diphtheria described by Barrett, in which a distinct 

 circumscribed slough appears on one tonsil, and death 

 often results. D., Cutaneous, a form involving abra- 

 sions of the skin. D., Gangrenous, a gangrene of 

 the skin and mucous membrane sometimes accompany- 

 ing diphtheria. D., Laryngeal, a form involving the 

 larynx, threatening death by suffocation . D., Malig- 

 nant, a very fatal form, beginning with rigor, vomit- 

 ing, and attended with typhoid symptoms. D., Nasal, 

 a form in which the diphtheritic membrane spreads to 

 the nasal passages, and is accompanied by a fetid. 

 brown discharge. D., Secondary, a term designating 

 the occurrence of the disease in association with other 

 acute affections, such as typhoid fever, scarladna, etc 

 D., Paraffin Treatment of, the membrane is scraped 

 or peeled off, and paraffin is applied to the raw surface 

 every hour by means of a large camel's hair brush. 



Diphtheric {dif-ther' -ik) [d/pflepa, a skin or mem 

 brane]. Pertaining to diphtheria. D. Conjuncti- 

 vitis, a form of conjunctivitis attended with an infil- 

 tration of coagulable matter or inflammatory products. 

 D. Membrane, the pellicle forming on the parts 

 involved in the diphtheric process. D. Paralysis, a 

 paralysis frequently affecting the muscles of the soft 

 palate and larynx, after tin- healing of the lesions of 

 e parts. 



Diphtheritic [dif-ther-iP-ik) \ditydepa, a skin or mem- 

 brane], Same as Diphtheric, q.\ 



Diphtheritis [dif-ther-P-tis). See Diphtheria. 



Diphtheroid [dif f -ther-oid) \6i<pBepa, a skin or mem- 

 brane]. Resembling diphtheria. D. Throat. Syn- 

 onym of // rpetic Tonsilitis. 



Diphthongia (dif-thon' '-je-ah) [die, double ; ffti, 

 a voir.]. The production of a double tone of the 

 voice by the incomplete unilateral paralysis ol the re- 

 current nerve, or by some lesion of the vocal bands 

 that causes each portion of the glottis to produce its 

 own sound. 



Diphycercal [dif-i-ser* -kal) \pttyvf]c, double . 



tail]. In biology, applied to fishes that have the 



