NAIA 



231 



NASTURTIUM 



porp 

 bod 



telluride of lead, &c. : also called tellurium 

 glance. 



Naia=Naja, q.v. 



Naiadse, (na'ya-de). [Gk. Nais, water nymph]. 

 1. A family of freshwater bivalve molluscous 

 animals; also called freshwater mussels. 



Naiadaceae, (na-ya-da'se-e). [Naias, q.v.]= 

 Naiads: aquatic plants, with fleshy leaves 

 and small flowers, belonging to Hydrales; 

 also called Fluviales. 



Naiadeae, (na'ya-de-e). [Naias, q.v.] Sub- 

 merged plants with slender branches and 

 long leaves, v. Naiadacese. 



Naias, (na'yas). [Gk. nais, water-nymph.] 

 A plant, the type of Naiadacese. 



Naididse, (na'ya-di-de). [Gk. nais, water- 

 nymph.] = Water - worms : hermaphrodite 

 worm-like animals, belonging to Annelida. 



Nails, (nalz). [Nagel, the A.-S. word.] Horny 

 modifications of the epidermis, covering the 

 ends of the fingers and toes. v. Horn. Inman, 

 flat; in the horse and ox, a hoof; in cats and 

 birds, sharp claws; in sea-bear, very small; in 

 rpoise, absent. In the pangolin, the whole 

 y is covered with nails. N. fungus. = 

 Agaricus esculentus: a minute fungus. 



Naja, (na'ya). A venomous snake belonging to 

 Crotalidae. N. tripudians: cobra di capello; 

 also called spectacle-snake, and hooded-snake. 



Naked. N. &ees=Denudata=Nomada: have 

 no apparatus for getting pollen: parasitic; 

 also called wasp-bees and cuckoo-bees. N. 

 eyed medusas = Craspedote: mostly small 

 and phosphorescent; like little glass bulbs. 

 v. Medusae. 



Nankin, (nan-kenO. [N. in China.] Acotton 

 cloth of a dark yellow colour 1 , named from 

 being first made at N. ; also called nankeen. 



Naphtha, ( naf tha; also nap'tha). [The Greek 

 name.] A general name for a number of 

 liquid hydrocarbons (much used for pur- 

 poses of heat and light); especially for those 

 which issue from the earth, v. Hydrocar- 

 bons. Boghead ^.^Photogen. Bone N.: 

 from bone oil. Coal N.'. from coal tar. 

 Mineral .ZV.= Rock -oil: from petroleum. 

 Native N. = Petroleum. Wood N. : from 

 distillation of wood. Shale N.: from shale. 

 N. springs: in America and on shores of 

 Caspian Sea. 



Naphthalene, (naf'the-len). [Naphtha, q.v.} 

 =Naphthalin, q.v. 



Naphthalin, ( naftha-lin ). [Naphtha, q.v.} 

 l.=C 10 H 8 : a white crystalline inflammable 

 substance obtained from coal-tar, from which 

 the nitrogenous bases, naphthylia and di- 

 naphthylia, are obtained by the action of 

 ammonia. 2.=Scheererite. 



Naphthol, (nafthol). [Naphthyl alcoho?.] 

 C 10 H 8 0=Naphthyl alcohol. 



Naphthyl, (nafthil). [Naphtha, q.v.; Gk. 

 In/le, material.] C 20 H 14 : the base of Naph- 

 thalene; the -radicle of Naphthylia. N, 

 a/co/(o=Naphthol. N. ethers=N. acetate; 

 N. benzoate, &c. 



Naphthylia, (naf-thil'i-a). [Naphthyl, q.v.}= 

 Naphthylamine=C 10 H9N: an organic base; 

 a crystallisable hydrocarbon obtained from 

 coal-tar. 



Naples. N. yellow = Antimoniate of lead: 



used as a pigment. 

 Napoleonite, (na-po'le-o-nlt). [Napoleon I.] 



A mineral found in Corsica; felspar and 



hornblende arranged concentrically round 



granite nodules; also called orbicular greeii- 



stone. v. Orthoclase. 

 Napoleon-worts=Belvisiacese, q.v. 

 Narceia, (nar'se-a). [Gk. narke, stupor.]= 



Narceine: one of the natural bases found in 



opium, crystallising in silky needles. 

 Narcissales, (nar-sis-sa'lez). [Narcissus, q.v.} 



Plants, with petaloid flowers and albuminous 



seeds: forming a division of Endogeris. 

 Narcissus, (nar-sis'us). [Gk. narke, stupor.] 



=Daffodil, Lent Lily, 



&c. : an herb with 



large white or yellow 



flowers. N. pseudo- 

 narcissus =~Lent lily= 



Camel's neck: belonging 



to Amaryllidaceae. 

 Narcotics, (nar-kot'iks). 



[Gk. narkotikos, stupe- 

 fying.] Substances, 



chiefly used as medi- 

 cines, which induce 



sleep. 

 Narcotic acid, Hydrated 



Narcotine. 

 Narcotine, ( nar'ko-tin ). " Narcissus. 



Gk. narke, stupor. ]=Co2n23~NC'7 : 01:0 of tho 



natural crystalline bases found in opium; 



poisonous. 

 Narcotism, (nar'kot-izm). [Gk.narke, stupor.] 



A retardation of the circulation. 

 Nardostachys, (nar-dos'ta-kis). [Gk. nardos, 



spikenard; stachys, ear of corn.]=Spikenard: 



an herb, belonging to Valerianacese, yielding 



the odorous ointment called spikenard. 

 Nardus, (nar-dus). [Gk. nardos, spikenard.] 



= Mat-weed: a plant belonging to Grami- 



naceae; also called mat-grass. 

 Nares^Nostrils; openings between the mouth. 



and nose. 

 Narrow. N. gauge: used of a railway that 



has 4 ft. SJ inches between the rails, cf. 



Broad-guage. 

 Narthecium, (nar-the'si-um). [Gk. narthex, 



a reed.] Bog-asphodel: an herb belonging 



to Liliacese. 

 Narwal=Narwhal. 

 Narwhal, (narwhal). [Nahvalr, the Icelandic 



uame.] = Mono- v:^ 



don monoceras: a "r^l- 



cetacean animal'- 



belonging to Del- 



phiriidfe. 

 Nasal, (na'zal). 



[L. nasus, the nose.] 

 N. vertebra 



N. Centrumr^Vomer. 

 Neurapophyses=Perfontal. 

 Spine=Nasal. 

 Nascent, (na'sent). [L. nascor, I am born.] 



N. state of chemical elements when just 



liberated from combination. 

 Nasturtium, (nas-ter'shi-um). [L. nasus, nose ; 



tortus, twisted.]= Watercress: an herb, with 



Narwhal. 



