ODONTOPHORE 



241 



OLACACEJE 



q.v.] A sub-division of Mollusca, including 



Cephalopoda, Pteropoda, and Gasteropoda, 



all of which have odontophores. 

 Odontophore, (o-don'to-for). [Gk. odous, tooth; 



phero, I carry.] A masticatory organ found 



in the more highly developed mollusca. A 



cartilaginous cushion supporting a strap 



carrying several lingual teeth. 

 Odontopetrae, ( o-dori-to-pet're ). [Gk. odous, 



tooth; petra, stone. ]=Glossopetra: a general 



term for fossil teeth. 

 Odontopteryx, (o-don-top'ter-iks). [Gk. odous, 



tooth; pteryx, wing.] 0. toliapicus. A bird, 



known only by fossil remains, found in 



London clay. 

 Odontosaurus, (o-don-to-saw'rus). [Gk. odous, 



tooth ; saurus, lizard.] A labyrinthodon 



reptile, known only by one jaw and fifty 



teeth. 



Odour sensations=Rhinaisthenics, q.v. 

 fficodoma, (5-kod'o-ma). [Gk. oikodomos, 



builder.] 0, cep/iaoies=Leaf carrying ant, 



q.v. 

 ffidicnemus, (e-dik-nS'mu's). [Gk. oidos, 



swelling; kneme, knee.] = Thick -knee: a 



wading bird belonging to Grallatores. 

 (Edipina, (e-dip'i-na). [Gk. oidos, swelling; 



pine, shell.] An elongated eft-like animal. 

 (Edipoda, (e-dip'o-da). [Gk. oidos, swelling; 



pous, foot.]=Pachytylus=Locust, q.v.: an 



insect, belonging to Orthoptera, named from 



its thick hind legs. 

 (Enanthe, (e-nan'the). [Gk. oinos, wine; 



anthos, flower .]= Water-drop wort: an aquatic 



herb, belonging to Apiacese, named from its 



scent. 

 CEnanthic, (6-nan'thik). [Gk. oinos, wine; 



anthos, flower.] 0. ether=~R\itic and Cap- 



rylic ethers: causes the odour of wine; also 



called Hungarian wine-oil. 

 (Enanthol, (e-nan'thol). [CEnanthic, q.v.]= 



CyH^O = CEnanthylic aldehyde, obtained 



from castor oil. 

 CEnanthyl, (e-nan'thil). [CEnanthic, q.v. ; Gk. 



hyle, material.]=:Heptyl: the radicle of the 



Heptylic or CEnanthylic series. 0. alcohol 



=Heptyl alcohol. 

 (Enanthylene, ( e-nan'thi-len ). [CEnanthyl, 



q.v.] C 7 H 14 =Heptylene, q.v. 

 CEnanthylic, (e-naii'thil-ik). [CEnanthyl, q.v.] 



0. acid^CyH^Oa: an aromatic acid; also 



called azoleic acid. 0. ctWe/iz/cieC^H^O 



CEnanthol, q.v. 

 CEnothera, (e-no-thg'ra). [Gk. oinos, wine; 



thera, hunt.] = Evening primrose: an herb 



belonging to Onagrariacese. 

 CEsophagus, (e-sofa-gus). [Gk. oisos, I carry; 



phagein, to eat.]=Gullet: the passage from 



the back of the mouth to the stomach. 

 CEstridse, (es'tri-de). [CEstrus, q. v. ; Gk. eidos, 



form.] A family of flies belonging to Dip* 



tera, 

 CEstrus, (es'trus). [Gk. oistros, fly.] A fly: 



the type of CEstridse. 0. bovis~0. equi=; 



Botfly, gadfly, &c. 

 (Ethusa=^Ethusa, q. v. 0. cynapium='LQas6r 



hemlock. 



O.F. Used for oxidising flame of blowpipe. 

 Obm=;B.A. unit = Unit of Distance, v. 



Electro - magnetic units. 1,000,000 O's = 

 Megohm. 9 O's nearly=The French unit of 

 resistance. 



Ohm's law. [Professor Ohm.] That the in- 

 tensity of a galvanic current is equal to the 

 electro motive force of a battery divided by 

 its resistance and that of the wire; expressed 

 by 1=5 : in. which I=intensity of current, 

 E = its electro -motive force, and R = the 

 resistance of the battery and circuit. 



Oidemia, (oi-de'mi-a). [Gk. oidema, surf.]= 

 Surf-duck: a bird belonging to Anatidse. 



Oidium, (oi'di-um). [Gk. oidao, I swell.] 

 Thrush-fungus=yine-disease: a fungus be- 

 longing to Mucedines. 



Oiketicus, (oi-ket'i-kus). [Gk. oikos, house.] 

 0. Sandersii; house-builder moth; also called 

 lictor-insect. 



Oil, (oil). [Oleum, the Latin word.] A 

 general tern for a great variety of unctuous 

 liquids, v. Oils. Soiled 0.: linseed oil, heated 

 with litharge. Castor 0. : from seeds of Ricinus 

 communis. Coal tar 0.=Dead O. Dippel's 

 <?.=Bone O., q.v. Rock 0.= Petroleum, q.v, 

 0. ofanise=O. of fennel. 0. beetle=1*leloe: 

 which ejects oil in drops from its leg. 0. 

 of ben: from Moringa aptera. 0. of bitter 

 aZmonc&=Benzoyl hydride. 0. of garlic 

 Sulphide of allyl. 0. gas. v. Oil-gas. 0. 

 of neroli: from orange tree blossoms. 0. 

 palm=Elseiis Guineensis. 0. of potatoes: a 

 residuum of distillation of vegetables, con- 

 tains propyl, butyl, amyl, and other alcohols. 

 0. free^Bassia longifolia. 0. of vitriol, v. 

 Sulphuric acid. 



Oils, (oilz). Organic, liquid, unctuous sub- 

 stances composed of carbon, hydrogen, and, 

 usually, oxygen; useful for fuel and lighting; 

 some used as food. Animal 0.: of animal 

 origin. Drying 0.: which absorb oxygen 

 and solidify, such as linseed, walnut, hemp, 

 &c. Essential 0.= Volatile oils, q.v. Fatty 

 0.=Fixed 0.: that cannot be distilled with- 

 out decomposition, nor volatilised below 

 450 P. Sweet principle of 0. =Glycerin, q.v. 

 Volatile 0.; are not decomposed during 

 distillation; chiefly from vegetables. Vege- 

 table 0.: in seeds. 



Oil gas = Butylene = Tetrylene = C 4 H 8 : a 

 colourless, combustible gas, liquid at 0" F. 



Oilstones: slaty stones used as whetstones; 

 also called Nephelite. 



Oken's classification of animalSi [By Professor 

 Oken, of Zurich, in 1809.] 



Intestinal animals=Body animals=Touch 



animals. 



Digestive animals =Radiata. 

 Circulative animals=Mollusca. 

 Respirative animals=Articulata. 

 Flesh animals^Head animals Vertebrata. 

 Carnal animals = Fishes, reptiles, and 



birds. 

 Sensual animals=Mammalia. 



Okenite, (6'ke-nit). [Professor Oken.] A 

 tough, white mineral, chiefly hydrated 

 silicate of palcium. 



Olacaoe, (Q-la-ka'se-5). [Gk. olax, furrow.] 



