ROSE 



290 



RUE-WORTS 



Rose, (roz). [Rosa, <?.?;.]=:Rosa, q.v. China 

 .R. =Hibiscus rosa-chinensis. Christmas R. 

 Helleborous niger. Dog jR.=Rosa canina. 

 R, 6ee(tcs=CetoniidaB. R. of Jericlio=A.na8~ 

 tatica hierochuntina. R. Mary = Ros- 

 niarinus : belongs to Lamiaceae. R. roo<= 

 Sedum rhodiola. JR. sawfly = Hylotoma, 

 q.v. R. tangles=Cer&mi&CKfe, v. Algae. JR. 

 7cood=Tiiuber of Physocalymua floribunda, 

 &c. JR. wors=Rosacea}. 



Roseine, (ro'zln). 

 [Rose, q.v. ] A rose- 

 coloured dye-stuff ob- 

 tained from aniline. 



Rosin, (roz'in). [Resin, 

 q.v. ] = Colophony : 

 the solid residue of 

 distilled turpentine; 

 a compound of seve- 

 ral hydrocarbons. 



Rosso-antioo, (ros- 

 so -an- te'ko). [The 

 Italian name.] A 

 red-veined variety of 

 marble. 



Rostellaria, (ros-tel- 

 la'ri-a), A gastero- 

 pod, having a long, 

 spiral, univalve shell. RortellarU. 



Rostrum, (ros'trum). [L. rostrum, beak.] 1. 

 The anterior end of the carapace in crusta- 

 cean animals. 2. Used generally as=Beak. 



Rot, (rot). [A.-S. rotian, to putrefy.] To 

 decay. Dry R. = Polyporus destructor, 

 Merulius lacrymans, <Jic. : fungi which de- 

 destroy wood. White R. = Hydrocotyle, 

 q.v. 



Rotating pendulum = Conical pendulum = 

 Governor, q.v. 



Rotatoria, (ro-ta-to'ri-a). [L. rota, wheel. ]=. 

 Rotifera, q.v. 



Rotation, (ro-ta'shun). [L. rota, wheel.] Re- 

 volution upon an axis, like the spinning 

 of a top, as in the Sun. Moon, Earth, and 

 other planets, <fcc. R. of crops : a recurring 

 series of different crops grown or the same 

 ground. 



Rotatory, (ro'ta-to-ri). [L. rota, wheel.] R. 

 muscles; v. Muscles. R. polarization: when 

 a ray of plane-polarised light changes the 

 plane in which it is polarised to the right or 

 to the left, owing to its passage through Ice- 

 land spar, sugar, &c. 



Rothliegende=Red-layers: a rock belonging 

 to the Permian system. 



Rotifera, (ro-tif'e-ra). [Rota, wheel: fero, 

 I bear.] = Wheel animalcules = Rotatoria : 

 minute aquatic animals (removed from In- 

 fusoria to Scolecida) having vibrating cilia, 

 in appearance resembling wheels, and living 

 in colonies. 



Rottboella, ( rot-bel'la ). [C. Rottboll, a 

 Danish botanist.] =Hard grass: a plant be- 

 longing to Graminacese. 



Rotten-stone. A soft earthly mineral, chiefly 

 silicate of aluminum and carbon. 



Rouge, (rozh). [Fr. rouge, red.] Ferric 

 oxide, used as a red cosmetic. 



Round, R, ?co?-Hi^=Ascaris Jumbricoides, 



Rove-beetles =Brachelytra, q.v. 



Rowan-tree=Pyrus aucuparia. 



Roxburghiaceae, ( roks-ber-gi-a'se-e ) Rox- 

 burgh-worts: twining shrubs of India, with 

 large showy flowers and tuberous roots, be- 

 longing to Dictyogens. 



Royal, R. /crn=Osmunda. 



Roy. Parallel roads of Glen Roy : three ter- 

 races, varying in breath from 10 to 70 feer,, 

 and following the contour of the glen; pro- 

 bably three lines of beach, marking succes- 

 sive rises in the land. 



Rubber. Indian /J.= Caoutchouc, q.v. Vul- 

 canised Indian R. = Caoutchouc and sul- 

 phur. 



Rubble, (rub'bl). Accumulations of angular 

 rock fragments; also used for rough stone 

 and brick work. 



Rubellite, (ro'bel-llt). [L. ruber, red; Gk. 

 lithos, stone.] A red variety of tourmaline. 



Rubeola, (ro-be'o-la). [L. ruber, red.] An 

 eruptive disease, resembling scarlet fever 

 and measles. 



Rubia, (rS'bi-a). [L. rubeu*, red.]=Mad<ler: 

 an herb belonging to Galiacese, which gives 

 a red dye. 



Rubiacese, (ro-bi-i'se-e). [Rubia, q. v.] 

 Galiacese, q.v. 



Rubiacio acid, ( ro-bi-a'sik ). [Rubia, q.v.] 

 =C32H 18 Oi7: obtained from madder. 



Rubian, (ib'bi-an). [Rubia, q.v.] The bitter 

 principle of madder. 



Rubidia, (rd-bid'i-a). [Rubidium, q.v.] = 

 RbvjO: rubidic oxide=Oxide of rubidium. 



Rubidic, (rp-bid'ik). [Rubidium, q.v.] Hav- 

 ing rubidium as a constituent. 



Rubidine, ( ro'bi-dln ). [L. ruber, red.] = 

 C'nH^N: one of the pyridine bases. 



Rubidium, (ro-bid'i-um). [L. rubidus, dark 

 red.]=Rb': one of the alkali metals; a white 

 soft metal, found in vegetables, with such 

 intense affinity for oxygen that it burns iu 

 contact with either air or water; its spec- 

 trum has dark red bands. 



Rubus, (ro'bus). [The Latin name.]=Black- 

 berry, Inc.: an herb or shrub, belonging to 

 Rosaceae. R. cham(emorus=Clo\idben-y. R. 

 frv.ticosus = Blackberry. R. idceus Rasp- 

 berry. 



Ruby, (ro'bi). [L. ruber, red.] A red trans- 

 parent variety of corundum, or native 

 alumina. Oriental .R.=Spinel. R. tailed 

 flies = Chrysididae, belonging to Hymenop- 

 tera. 



Rudd, [A.-S. rud, red.] A carp-like fish, 

 belonging to Leucis- 

 cus ; also called Red- 



'eye. 



Rudder. [R6dher, the 

 A.-S. word.] An ap- 

 paratus to govern the 

 direction in which a 

 moving ship goes. RudJ. 



Rudistes, (ro-dis'tes). An acephalous mollusc, 

 with bivalve shell, peculiar to Upper Cre- 

 taceous beds. 



Rue. (ro). [Ruta, the Latin name.] = Ruta 

 raveolens: an herb belonging to Rutacere, 

 q,v. 



