CONOID 



CORAL 



Conoid. 



conical bodies, probably the spines of mol 



luscs or the horny teeth of fishes. 

 Conoid, (kon'oid). [Coue, q.v.: 



Gk. eidos, form.] A solid 



having an approximation to 



the form of a cone, especially 



the figure made by the revo- 

 lution of one of the conic sections 



round its axis. 

 Console, (kon's51). [L. consolidus, firm.] A 



bracket, usually formed by a projection 



from the wall. 

 Constant batteries, Gal-r 



vanic batteries which 



remain in uniform 



action for several hours 



or days. 

 Constellations, (kon-stel- 



la'shunz). [L. co>i,with; 



stelUi, star.] Groups of 



Btars mostly with classi- 

 cal names. Ancient C. : Console. 



48 formed by Ptolemy in 150 A.D., with 2 



others added by Tycho Brahe. Modern C. : 



59 others since formed, many by Helvetius 



at the end of the 17th century. 

 Contact action=Catalysis, q. ' 

 Convallaria, (kon-val-la'ri-a). 



[L. convallis, a valley.] 



Lily of the valley : a plant 



belonging to Liliaceae. 

 Convection, (kon-vek'shun). 



[L. conveho, I carry.] The 



passage of heat, electricity, 



&c., by its being carried 



from place to place by parti- 

 cles of matter affected by it. ConvalUria. 

 Convex (kon'veks). [L. convexus, arched.] 



Rounded. 

 Convolvulaceae, (kon-vi 



lu'se-e ). [Convolvulus, q.v.] 



= Bindweeds : herbs and 



shrubs, chiefly tropical, be-' 



losing to Solonales. Convex. 



Convolvulus, (kon-vol'vu-lus). [L. convol- 



vere, to entwine. ] = 



Bindweed : a twining 



herb, with milky juice, 



the type of Couvolvu- 



lacese. 

 Cony, (ko'ni). [L. cuni- 



culus, little rabbit.] 



A variety of the rabbit. 

 Conyl=C 8 H 14 : an hypo- 

 thetical hydrocarbon 



contained in Conylia. 

 Conylia Conia, q.v. Convolvulus. 



Co-ordinates, (ko-ord'i-nats). [L. con, with; 



Lines and angles, 

 used in mathematics 

 to fix the position of 

 a point or series of 

 points. 



Coot, (koot). [Welsh 

 cwt, short tail. ] = 

 Fulica : an aquatic 

 bird, belonging tq 

 Grallatores. 



Coot. 



Copai'oa, (ko-pii'ba). [The Spanish name.] 

 A resin obtained from Copaifera, a S. Ameri- 

 can tree. 



Copal, (ko'pal). [Copalli, the Mexican name.] 

 A resin obtained from the tree Hymeusea 

 and others, used as a varnish. 



Copalite, (ko'pa-lit). [Copal, q.v.] An in- 

 flammable mineral. 



Copepoda, (ko-pe'po-da). [Gk. kone, oar: pous, 

 foot.] Minute crustaceans, both marine and 

 fresh-water, some locomotive, some fixed par- 

 asites, called Oar-footed Crustaceans. 



Copernican system, (ko-per / ni-kan)=Solar sys- 

 tem, q.v. 



Copernicus, (ko-per'ni-kus). A crater in the 

 moon, about 46 miles in diameter, sur- 

 rounded by mountains about 2 miles high, 

 named after the astronomer Copernicus. 



Copper, (kop'per). [Cyprus.]=Cuprum=Cu": 

 a red, hard, "ductile, tenacious, malleable 

 metal: of great and varied use; originally 

 called brass of Cyprus. Also named after 

 Venus, and expressed by 9 C. sand=A.t&- 

 camite, q.v. C. group of minerals: mostly 

 soft, and give blue solutions and blowpipe 

 flame; includes copper, cuprite, melaconite, 

 malachite, chessylite, chrysocolla, chalco- 

 cite, erubescite, chalcopyrite, olivenite, &c. 

 Black C. ore=Melaconite, q.v. Grey C. ore= 

 Chalcocite, q.v. Telloio C. ore=Chalcopy- 

 rite, q.v. C. glance: a variety of Chalcocite, 

 q.v. C. pyrites : a variety of Chalcopyrite, 

 q.v.; the common ore of copper. 



Copperas, (kop'per-as). [Couperose, the French 

 name.]=Green vitriol: sulphate of iron. 



Coprolites, (kop'ro-lits). [Gk. kopros, dung: 

 lithos, stone.] 1. Fossil excrement of ani- 

 mals, at first mistaken for fir cones. 2. Peb- 

 bles of calcic phosphate and carbonate; for- 

 merly supposed to be fossilised dung, found 

 in Chloritic or Upper Greensand beds. 



Copulated acids, (kop-u-lat'ed)=rConjugated 

 acids; in which the base and acid are more 

 intimately mixed than in ordinary salts. 



Cor, (kor). [The Latin name.] The heart; 

 sometimes applied to the chief star of a con- 

 stellation. C. Caroli: a bright star in Canea 

 Venatici; named in honour of Charles II. 

 at the Restoration, when it was observed to 

 shine more brightly than usual. C. Hydrce 

 = a. Hydrae. C. Leonis = a Leonis. C. 

 Serpentis = a Serpentis: also called Unu- 

 kalkay. 



Coracoid, (kor-a-koid'). [Gk.korax, crow; eidos, 

 form. ] A bone forming 

 part of the scapular arch; 

 in man it has the form of a 

 crow's beak. 



Coral, (kor'al). [Corallum, 

 the Latin name.] Stony 

 matter secreted by polyps, 

 hydrozoa, bryozoans, &c. ; 

 nearly pure carbonate of 

 lime ; harder than common 

 limestone. Red C. = Coral- 

 lum rubrmu. C. is land = CoraL 

 Coral reefs, isolated in deep oneans. C. polyp 

 = Anthozoa. C. ?-agf=Coralline limestone. 

 C. reefs, of coral, rock, built on sea-bottom, 



