RIND 



455 



ROLANDOME TER 



glottis. R. hyperglottica, R. ligamentosa. See 

 R. glotti/is (Illus. Diet.). 

 Rind. (See Illus. Diet.) R. Disease, a disease of 

 sugar-cane in the West Indies, said to be identical 



Kith the red smut disease of Java, due to the fungus 

 llletotrichum falcatum. 

 g. (See Illus. Diet.) R., Arnold's Tendinous, 

 e mass of ribrous tissue from which the fibers of the 

 median layer of the tympanic membrane originate ; it 

 is arranged around the periphery of the tympanitic 

 membrane, which it unites with the inner edge of the 

 ternal auditory canal. R.. Arthritic. See Zone, 

 /erotic. R. -bodies, peculiar ring-shaped bodies of 

 eat variety found by R. C. Cabot by means of 

 ''right's stain in the erythrocytes in pernicious anemia, 

 ukemia, and lead poisoning. R.s, Boucher's, the 

 rst row of meshes in the reticular membrane of the 

 hlear canal, extending outward from the union of 

 inner and outer pillars. R.s, Bronchial, the 

 ronchial cartilages. R.s, Donders', rainbow-colored 

 ngs seen in cases of glaucoma and by normal and 

 taractous eyes when the pupil is dilated. They are 

 tributed to the diffraction of light by the cortex of the 

 rystalline lens. R.s, Festooned, R.s, Fibrocar- 

 tilaginous, R.s, Fibrous (of heart), fibrous rings 

 surrounding the auriculoventricular and arterial orifices 

 of the heart and attaching its muscular fibers. R., Mas- 

 cagni's, in the fetus a circle formed by the small cap- 

 illary branches of the blood-vessels near the zonule of 

 Zinn. Syn., Circulus Mascagnii. R.s, Meyer's, R.s, 

 Meyer- Wohler's, the faint rings seen to surround a 

 candle -flame or a similar source of light against a dark 

 background; they appear more distinct, as \Y Shier has 

 shown, when the eyes are exposed for a short time to 

 the fumes of osmic acid. The phenomenon is due to 

 the diffraction of light by cellular elements on the sur- 

 face of the cornea. R., Navel, the constriction exist- 

 ing between the umbilicus and the umbilical cord. R., 

 Schroder's Contraction. See R., BandT s (Illus. 

 Diet.). R., Vieussens', the annulus ovalis of the 

 right auricle. R., Waldeyer's Tonsillar, the ring 

 formed by the two fauciai tonsils, the pharyngeal tonsil, 

 and smaller groups of adenoid follicles at the base of 

 the tongue and behind the posterior pillars of the fauces. 

 R.s, Wohler's. See R.s, Meyer's. R., Zinn's, the 

 circular fibrous sheath formed by the common tendon 

 of the internal, external, and inferior rectus muscles. 

 Ringworm. (See Illus. Diet.) R., Bowditch Island, 

 R.. Indian, R., Solomon's Island, R., Tokelau. 

 See Tinea imbricala (Illus. Diet.). R., Ulcerative. 

 See Herpes exedens. R., Vesicular. See Herpes 

 tnitalis (Illus. Diet.). 

 Ripples (rips-els). Scotch vernacular term for locomotor 



ataxia. 

 Rivalry (ri'-val-re) \rivales, near neighbors who used 

 the same brook]. A struggle for supremacy. R. of 

 Colors, a rivalry of the visual fields of the two eyes, 

 a different color being presented to each. R. of Con- 

 tours, a rivalry of the contours of two objects, one of 

 which is presented to each eye, when they overlap in 

 the binocular field of vision. R., Retinal. See R., 

 Strife. R., Strife, the alternate mastery of one or the 

 other sensation, color, contour, etc., in the eyes when 

 the fields of vision of the two eyes are incapable of 

 being combined into one image. R. of Visual Fields. 

 See R., Strife. 

 Riverius' Draft. A solution of sodium citrate. 

 Riviera {re-ve-a'-rah) [It. coast], R.. Eastern. R., 

 Liburnian. The Austrian Adriatic coast. It has a 

 higher relative humidity and is rather colder than the 

 Western Riviera; the climate is more changeable and 

 subject to disagreeable winds, especially the "bora,"' 



worst in winter and early spring. Abbazia is the best- 

 known health resort. [Weber.] R., Western, or 

 Riviera di Ponente, the narrow strip of coast land 

 between Toulon and Genoa ; extending from 43 to 

 44. 5° latitude north, from one to four miles in width, 

 and is open to the Mediterranean on the south and 

 southeast. It has a dry soil, — chiefly of chalk. — and is 

 sheltered more or less by mountain ridges on the north- 

 east and northwest. The chief characteristics of the 

 Riviera climate are its winter warmth, its relative dry- 

 ness and small number of rainy days, and its brightness 

 — qualities that render it cheering to the mind and 

 stimulating to the body. During the six winter months 

 one hundred days or more may be expected to be fine 

 enough for most invalids to be in the open air for 

 several hours. [Weber.] 



Rixolin (riks'-ol-in). A mixture of petroleum and light 

 oil of camphor. 



Robin (r</-bin). A toxic albuminoid obtained from 

 the bark of the locust tree, Robinia psendacacLi, L., a 

 powder partly soluble in water, with action similar to 

 abrin and ricin. 



Robiquet's Soluble Ferric Pyrophosphate. See 

 Ammonium Citrate. 



Roborant. (See Illus. Diet.) 2. A tonic or strength- 

 ening remedy. 



Roborat (ro / -bor-at)[robor, strength]. An albuminous 

 dietetic prepared from maize, containing lecithin and 

 glycerin phosphoric acid. 



Roborin 1 ro'-bor-in). A grayish-green powder or 

 brown mass, obtained from blood and said to consist 

 of water 7.6^ , calcium carbonate 10.23',. common 

 salt 1.7%, iron oxid 0.49^, other mineral substances 

 1. 28 <T ( , albuminoids 78.63 <£; the last are principally 

 calcic albuminates. 



Rod. (See Illus. Diet. ) R.-bipolars, bipolar cells of 

 the inner nuclear layer of the retina, connected exter- 

 nally with the rods of the retina and internally with 

 the rods of the ganglionic layer. R.s. Corti's, the 

 pillars of the arch of the organ of Corti. R. -fibers, 

 one of the fibers of the retinal rods. R. -granules, 

 cells of the outer nuclear layer of the retina ; they are 

 characterized by transverse striations and give off pro- 

 cesses connected with the rods of the ninth layer. Cf. 

 Cone-granules. R. Wax. See under Wax. 



Rodagen {rod' -ah -Jen). A proprietary preparation of 

 goats' milk said to contain 50 f£ of milk-sugar. It is 

 used in treatment of exophthalmic goiter. Daily dose, 

 75-150 gr. (5-iogm.). 



Roeschlaub's " Excitement " Theory of Life. See 

 under Lift. 



Rohun Bark [ro , -un). The bark of Soymida febri- 

 fuga, Juss. 



Rokusho [Japanese]. A form of verdigris produced by 

 the action of pium juice vinegar on plates of copper 

 containing impurities ; employed by Japanese artists 

 for artificially bronzing copper medals. 



Rolandic 1 ro-lana'-ik). Relating to or named in honor 

 of Louis Rolando an Italian anatomist, 1773-183 1. 



Rolandometer \ro-land-om'-et -ur). A device of 

 Kohler for locating on the head the place of the fissure 

 of Roland. It consists of a flexible steel band which 

 is laid close to the skull over the median line from the 

 lambda to the nasion ; another perpendicular band 

 passes through the preauricular point to the median 

 band ; a third posterior band begins at the base of the 

 processus mastoideus and passes perpendicularly to the 

 median band ; both of these bands are movable on the 

 median band. The anterior band is marked into three 

 equal divisions ; the middle third is divided. If now 

 a fourth band is passed from the point of union of the 

 posterior band with the median band to the lower half 



