SIGXALETIC 475 



through injury, of the vessel. S., Warthin's, ac- 

 centuation of the pulmonary sound in acute pericarditis. 

 S., Wegner's, in fetal syphilis the dividing-line 

 between the epiphysis and diaphysis of long bones, 

 which under normal conditions is delicate and recti- 

 linear, appears as a broad, irregular, yellowish line. 

 S., Weiss, "facialis phenomenon,'' contraction of the 

 facial muscles upon light percussion ; it is noticed in 

 tetany, neurasthenia, hysteria, and exophthalmic goiter. 

 S., Williams', diminished inspiratory expansion on 

 the left side in adherent pericardium. Williams' 

 Tracheal Sound, a high-pitched tympanitic sound 

 heard on percussion over the second and third ribs near 

 the sternum, the mouth being open ; it is noted in in- 

 filtration of the lung. 



Signaletic (sig-nal-et'-ik). Relating to signalment. 



Signalization, Signalment (sig-nal-i-za' -shun, sig'- 

 nal-ment ) [signum, a sign]. See Bertillonage (Illus. 

 Diet. ) and Identification, Anthropometric. 



Siguatera. (See Illus. Diet.) [Sp. fish-poisoning.] 

 2. Poisoning from the ingestion of fresh food uninfected 

 by bacteria but in which the toxin is a leukomain 

 formed by the physiologic activity of the tissues. 



Silberol (sil'-bur-ol). See Silver Paraphenol-sulfonate. 



Silicon. See Illus. Diet.) S. Carbid, a compound 

 prepared by heating in an electric furnace silica and 

 carbon in the presence of salt. Next to the diamond 

 it is the hardest substance known. The pure salt forms 

 colorless, transparent laminas of diamond-like luster. 

 Its specific gravity is 3.22 and its index of hardness 

 9.5. S. Tetracetate. SifO. C,H 3 0) 4 , acetoortho- 

 silicic anhydrid, a substance occurring in prismatic 

 crvstals. 



Siliqua. See Illus. Diet.) S. olivae, S. olivae ex- 

 terna, the nerve-fibers encircling the olive. S. olivae 

 interna, the dentoliva. 



Silk. (See Illus. Diet.) S. Gelatin, a glutinous mass 

 formed by boiling certain kinds of raw silk in water. 

 It is used in bacteriology as a culture-medium for die 

 majority of bacilli of water and air. S., Tait's, or 

 cable twist ; it differs from ordinary silk in containing 

 the gums or animal matter imparted by the worm in 

 the spinning process. [Truax.] S.vine. See Peri- 



Silphologic (sil-fol-oj'-ik) [au.o>i, an insect; 7.6yo$, 

 science]. Larval. 



Silver. ( See Illus. Diet.) S. Arsenite, Ag 3 AsO s , an 

 alterative and antiseptic ; used in skin-diseases. Dose, 

 T i __^ gr. 1 o.ooo5-o.o:>ii gin.). S. -casein, a fine 

 white powder soluble in hot water, obtained from 

 sodium casein by action of silver nitrate and alcohol. 

 It is used in gonorrhea in 2%-lO% solutions. S. 

 Chlorid, AgCl, a white powder soluble in ammonium, 

 potassium thiosulfate, or potassium cyanid. It is used 

 as an antiseptic and a nerve sedative. Dose, ' 

 I', gr. 10.02-0.05-0.1 gm. ). Syn., Horn- 

 Luna cornea. S. Citrate, Ag 3 C 6 H.O-, a fine dry 

 powder soluble in 3800 parts of water, used as a 

 surgical antiseptic and disinfectant. Application I '. ■- 

 ointment or 1 : 4000 solution. Syn., Itrol. S., 

 Colloidal, a form of metallic silver consisting of heavy 

 greenish black particles of metallic luster which when 

 triturated with water form a greenish-black fluid. It 

 is used in the treatment of septic diseases, applied in 

 the form of an ointment. Syn., Col'argol; Argentum 



I colloidale: Argentum Cred'e. S. Fluorid, AgFl. a 

 brown, glassy, elastic solid, very soluble in water, dis- 

 covered by Paterno in 1901. It is used as an anti- 

 septic. Syn., Tachiol. S. Gelatose, albargin. S., 

 German.' See Argentan. S. Ichthyolate. See 

 Ichthargan. S. Lactate, AgC 3 H 5 O s -f H 2 0, a white 

 soluble powder recommended as a surgical antiseptic. 



SIMSTROCEREBRAL 



Injection in erysipelas, 0.3 gm. to 100 c.c. of water ; 

 as a wash, I teaspoonful of solution I : 50 in a glass of 

 water. Syn., At to/. S. Nucleate or Nucleid. See 

 Narg* I. S. Paraphenol Sulfonate, an external 

 antiseptic. Syn., Silberol. S. and Potassium 

 Cyanid, AgK(CN) 2 , very poisonous white crvstals, 

 soluble in 4 parts of water at 20 C or 25 parts < 

 alcohol. It is antiseptic and bactericide. One part in 

 50,000 destroys anthrax bacilli. S.-protalbin. See 

 Largin. S. Sulfocarbolate, S. Sulfophenate, a 

 fine crystalline powder containing about 28^ of metal- 

 lic silver ; it is a non-corrosive antiseptic used in eye 

 diseases and wounds. S. Thiohydrocarburosul- 

 fonate. See Ichthargan. S. Trinitrophenolate, 

 a compound containing 30^ of silver used as an anti- 

 septic on inflamed mucosas. Syn., Picralol. S. 

 Vitelline. See Argyrol. 



Silvestrene. See Syliestrene (Illus. Diet. . 



Simaba cedron, Planch. (See Illus. Diet. ) The seeds 

 are antiperiodic and tonic. Dose of fld. ext. , 0.06— 

 0.5 c.c. It contains, according to Tanret, the alkaloid 

 cedronin and also cedrin. 



Similia similibus curentur. Doctrine of. A sophism 

 formulated by Hippocrates, later by Paracelsus \ "simile 

 similis cura, non contrarium"), and later, as one of the 

 results of the reaction against the heroic measures of 

 venesection and drastic medication, by Samuel Christian 

 Friedrich Hahnemann, the apostle of homeopathy, 

 whose doctrine that like is to be cured by like led 

 naturally to the practice of isopathy (a. v.), according 

 to which smallpox is to be treated by variolous pus, 

 tapeworm by ingestion of proglottides, etc. 



Simoon [si-moon') [Pers. Samm, poisoning]. A hot 

 suffocating wind of Africa and Arabia, that sometimes 

 rushes across the desert with such violence as to raise 

 clouds of sand and sweep them in whirling masses for 

 miles [Weber]. Syn., Samiel. Cf. Mistral. Sirocco, 

 Solano, Harmattan, Khamsin, Foehn, Norther, 

 Mumuku. 



Sinai (si'-nal). Relating to or situated within a 

 sinus. 



Sinapized (sin'-ap-izd). Mixed with mustard. 



Sinapol (sm'-ap-ol). A mixture recommended as an 

 application for neuralgia, rheumatism, etc., said to 

 consist of spirit of rosemary (1 : 15), 780 gm.; castor 

 oil, 120 gm.; menthol, 30 gm. ; essence of mustard, 30 

 gm.; aconitin, 0.4 gm. 



Sinapolin (sin-ap'-ol-in). Diallylurea, a substance ob- 

 tained from mustard oil by heating with water and lead 

 oxid. 



Sinde Boil. See Ftirunculus orientalis (Illus. Diet.). 



Singult (sin'-gult) {singultus, a sobbing]. A sob. 



Singultient (sin gul'-she ent). Sobbing, sighing. 



Singultous (sin-gulf -us ). Relating to or affected with 

 hiccough. 



Sinistral. (See Illus. Diet.) 2. Showing preference 

 for the left hand, eye, foot, etc., for certain acts or 

 functions ; the reverse of this is dextral. 



Sinistrality (sin-is-tral'-it-e) [sinister, left]. The 

 preference generally for the left hand, eye, foot, etc., in 

 performing certain act-. 



Sinistration (sin-is-tro'-sJhm). 1. A turning to the 

 left. 2. Sinistrality. 



Sinistraural (sin-is-traziZ-ral) [sinister, left; auris, 

 ear]. Left-eared ; the reverse is dextraural. 



Sinistrocardial (sin-is tro-k.n J -de-al ) [sinister, left; 

 KapAia, heart]. Having the heart to the left of the 

 median line ; the reverse is dextrocardial. 



Sinistrocerebral tsin-is-tro-ser'-e-bral . I. Located in 

 the left cerebral hemisphere. 2. Functionating prefer- 

 entially with the left side of the brain ; the reverse is 

 dextrocerebral. 



