BHUS 



ROCK 



the compass, so that it cuts all the meridians 

 it crosses at the same angle. 



Rhus, (rus). Sumach: a plant belonging to 

 Anacardiaceae. 



Rhynchsea, (rin-ke"a). [Gk. rhygchos, beak.]= 

 Painted snipe, v. Snipe. 



Rhynchophora, (ring-kofo-ra). [Gk. rhygcho*, 

 beak; phoreo, I bear. ]= Weevils: a primary 

 division of beetles; also called Tetramera. 



Laynchosaurus, ( ring -ko- saw 'rus). [Gk. 

 rhygchos, beak; saura, lizard.] A reptile, 

 known by fossil remains found in Trias rocks. 



Rhynconella, (ring-ko-nel'la). [Gk. rhygchos, 

 beak. A genus of Braehiopoda, found from 

 Silurian periods until now. 



Ribbands. Pieces of quartering, or squared 

 timber, used to keep the timbers of a ship 

 in their places. 



Ribbon. R. ^A=Gymnetrus. R. worm= 

 Nemertida, q.v. 



Ribes=Grossulariaceae: shrubs belonging to 

 Grossales. R. pros*wtaria=rGooseberry. R. 

 ri(6rwu=Red currant= Wild currant. 



Rib-grass=Plantago=Plantain, q.v. 



Rib-worts=Plantaginaceae, q.v. 



Ribs. Slender curved bones, extending from 

 the spine, in vertebrate animals. False R.: 

 that do not reach to the sternum or breast- 

 bone. True R. connect the spine and breast- 

 bone. 



Ricciace8B,(riks-i-a'se-e)=Cry8tAl-worts: small 

 aquatic plants belonging to Muscales. 



Riccioli. R.'s mapof the Moon: in which the 

 nomenclature of Lan green is restored. 



Rice. (ris). [Oryza, the Latin name.]=Oryza 

 sativa: a plant belonging to 

 Graminaceae, grown only in 

 warm and damp districts, the 

 grains of which are much used 

 as food, being chiefly composed 

 of starch. R. 6irti=Javaspar- 

 row = Loxia oryzivora. R. 

 grains: a name used for the 

 small bright spots on the pho- 

 tosphere of the sun, or in its 

 atmosphere. R. weevil = 

 Sitophilus oryzae: lives on rice, 

 made from pith of Arabia papyri fera. 



Ricinus, (ris'in-us). [L. ricinus.] Castor-oil 

 plant. 



Ricochet, (rik'o-sha). [The French word.] 

 Bounding. R. firing: so that the shots strike 

 the ground once or twice before the object 

 aimed at is reached. 



Rifled gun. With two or more spiral grooves 

 in the surface of the bore, so that the projec- 

 tile has a rotatory motion ; shorter than 

 smooth-bore guns for the same charge, cf. 

 Musket. 



Right, (rit). [Rilit, the A.-S. word.] R. angled 

 =rOrthogonal=Perpendicular. R. ascension: 

 the distance of a heavenly body from the first 

 point of Aries, measured along the celestial 

 equator. R. handed=Dex.tral. R. whale, v. 

 AVhale. 



Rigor mortis, (risr'or mor'tis). [The Latin 

 words.] The stiffness of death. 



Rigel, (ri'gel). A blue star; the lower western 

 star in the quadrilateral of Orion. 



Rilles, (rilz). Marks on the Moon's surface, 

 probably trenches. 



Rime, (rim). [Hrim, the A.-S. word.] Hoar- 

 frost; congealed dew. 



Ring. Ji. digit =. Fourth finger. R. dove= 

 Columba palumbus. R. formations: on sur- 

 face of Moon, supposed to be not volcanic, 

 there being no central cone ; also called 

 Walled Plains and Ramparted Plains. Ji. 

 t/iints/t=Merula torquata. R. vortex ; repre- 

 sented by a number of small circles placed 

 side by side so as to form a larger circle, like 

 beads on a string. 



Ringed, (ringd). R. snai-e=Coluber natrix. 

 R. icorms: Heaven's term for Annulata. 



Rings, (ringz). Fairy R.; term applied to 

 small places where the grass is especially 

 luxuriant. R. of Saturn ; the principal are 

 named A, B, C; v. Saturn. Neicton's R., r. 

 Newton's. Nobili's R., v. Nobili's. 



Ringworm, (ring'werm). [Ring and Worm, 

 q.v.] An eruptive disease, named from the 

 circular form of the eruptions. 



Rinman's Green. A pigment owing its colour 

 to oxides of cobalt and zinc; also called Co- 

 balt-green. 



Ritteric rays= Actinic rays of light, q.v. : those 

 which are most capable of chemical action. 



River, (riv'er). R. Ao<7=Potaniochaerus peni- 

 cillatus=:liydrochiV!rus. R. Aom=Hippo- 

 potamus. R. niail5=:Paludina, q.v. 



Rivinus's classification of plants. Made in 

 1690, according to the corolla. 



Roach, (roch). [Reohche, the A.-S. name.] 

 =Leuciscus rutilus : 

 a fish belonging to 

 Cyprinidse. 



Road metal = Stone ' 

 for road making. 



Roads, (rddz). Paral- Roach. 



lei R. of Glen Roy : three parallel lines of 

 beach, f. Roy. 



Roan, (ro'an). R. tree: a tree belonging to 

 Pyrus; also called Mountain Ash. 



Roast-beef plant=Iris fcetidissima. 



Robber, (rob'ber). R. cj-a6s=Paguri(lo9, q.v. 



Robert, (rob'ert). HerbR.= Gerauum Roberti- 

 annin. 



Robertsonia, (rob-ert-so'ni-a). R. umbrosa= 

 London pride; also called Saxifragaumbrosa. 



Robin, (rob'in). 6'oWen J'J.^Baltiinore oriole. 

 Ragged R. =Lyelmis flos cuculi. R. redbreast 

 =Erythaca. 



Robinia, (ro-bin'i-a). [M. Robin.] A plant 

 belonging to Leguminacefe. R. pxeudacacia 

 = Bastard acacia; also called Locust Tree. 



Robur, (ro'ber). [The Latin word.]=British 

 oak=Quercus robur. 



Robur Caroli, (ro'ber kar'o-li)=King Charles's 

 oak : a southern constellation, formed by 

 Halley in 1676, of a portion of Argo Navis. 



Roccella, (r5k-sel'la). [Orchella, the Spanish 

 word.] A lichen, found on rocks and walls 

 near the sea. R. fusi-formis = Mauritius 

 weed. R. tinctoria=A.rcin'd.l,q.v.; also called 

 Orchilla, q.v. 



Rochelle salt, (ro-shel')-KNaC4H 4 O 6 .4HoO: 

 hydrated tartrate of sodium and potassium. 



Rock, (rok). [Roche, the French word.] Any 



