DOBEREINER'S 



106 



DOfcFEL 



usually 



oue egg 



birds = Divers : 

 only. 



Dobereiner's lamp. In 

 which hydrogen is burnt 

 by being caused to pass 

 over spongy platinum. 



Dock, (dok). [Docce, tha 

 A.-S. name.]=Rumex, 

 a common herb belong- 

 ing to Polygonaceae. 



Doctor, (dok'tor). = Acan- 

 thurus, q.v. = Lancet 

 fish : a fish having 

 sharp-edged spines near 

 the tail. 



Dodder, (dod'der). [The Diving-bell 

 Danish name.]=Cuscuta : a twining para- 

 sitic plant without leaves, the type of Cus- 

 cutacese. 



Dodders, (dod'derz). [Dodder, 5.v.]=Cuscuta- 

 cese; dodder-like plants belonging to Solan- 

 ales. 



Dodder laurels^Cassythacese, q.v. 



Dodecagon, ( do-dek'a-gon ). [Gk. dodeka, 

 twelve; gonia, corner.] A regular polygon, 

 having twelve equal sides. 



Dodecahedron, (do-dek-a-hed'ron). [Gk. do- 

 deka, twelve ; hedra, 

 base.] A regular solid 

 figure having twelve 

 equal sides. 



Dodecandria, ( do - de - 

 kan'dri-a). [Gk.dodeka, 

 twelve; aner, man.] A 

 class of plants in the Dodecahedrons. 

 Linnaean system ; including those having 

 from 11 to 19 stamens. 



Dodecandrous, (d5-de-kan'drus). [Dodecan- 

 dria, q.v.] Having 12 stamens. 



Dodecane, (do'ae-kan)=C 12 H 2 6 : a hydrocar- 

 bon, also called Dihexyl. 



Dodo, (do'do). [Doudo, tlio Portuguese name.] 

 =Aphanapteryx 

 brseckii = Didus in- 

 eptus: a large ground 

 pigeon with short 

 wings, found alive iu 

 Mauritius till about 

 1700. 



Dog, (dog). [Doggr,ihg 

 Icelandic name.]= 

 Canis: a domesticated 

 carnivorous quadra- Dodo, 



ped, resembling the wolf, of which it is pro- 

 bably a variety. D. Kc/ierc=Peltidea canina. 

 D. banes = D. worts = Apocynacese: plants 

 with poisonous sap. D. /s/i=Squalus spinax : 

 a shark-like fish, belonging to Plagiostomi. 

 D.-headed monte/=Baboon, q.v. D.-mer- 

 ciu-?/=Mercurialis, q.v. J>. rose=Rosa canina. 

 D. sar=Sirius: a star of the first magnitude 

 in Canis Major. D. wood=yfood of Rham- 

 nus frangula, Cornus sanguinea, and Alnus 

 glutinosa; used for gunpowder. 



Dog-tooth spar. A variety of carbonate of 

 lime, with small projections on the faces of 

 the crystals. 



Dog-of-the-marsh. A fossil fox-like animal 

 found at (Eningen, and bought by Sir K. 



Murchison for 30 ; now in the British 



Museum. 

 Dog's tooth violet=Erythronium dens-cauis: 



a plant belonging to Liliacete. 

 Dolerite, (dol'-e-rit). [Gk. doleros, deceitful.] 



A coarse variety of basalt, often mistaken 



for diorite. 

 Dolichocephali, (dol-i-ko-sef'a-li). (Gk. doli- 



chos, long; kephale, head.] Term used by 



Retzius for long-headed people. 

 Doli chocephalic. ( dol-i-ko-se-fal'ic ). [ Gk. 



dolichos,long; kephale, head.]=Long-headed. 

 Dolichocephaly, (dol-i-ko-sef'a-li). [Dolicho- 

 cephalic, #.v.]=:Long-headedness. 

 Dolichosaurus, (dol-i-ko-saw'rus). [Gk, doli- 



chos, long ; saura, lizard.] A slender reptile, 



known only by fossil vertebrae, found in 



Wealden. 

 Dolium, (dol'i-um). [L. dolium, tun.] A 



univalve mollusc, found fossil in chalk rocks. 

 Dolmen, (dol'men). [Celt, daul, table ; mcen, 



stone .] =Tabl e-stone : a stone erection, like 



a room with a flat roof, a relic of pre-historic 



times. 

 Dolomite, (dol'6-mit). [M. Dolomieu. ] A 



granular variety of magnesian limestone, 



used as a building stone : a mineral sub- 

 stance crystallising in hexagons. 

 Dolphin, (dol'fin). [Delphin, the Greek 



name.]=Delphinus : an 



animal resembling the 



whale. 

 Dome, (dom). [Gk. ( 



doma, house.] A sphe- 

 rical roof to a building, Dolphin. 



properly confined to the outer part, tho 



inner being called a cupola. 

 Dominant, ( dom'i-nant ). [L. dominor, I 



rule.] The fifth note of the musical scale, 



also called Sol. D. chord : the chord of this 



note. 

 Donacia, ( don-a'si-a ). [ Gk. donnx, reed ] 



Elytra found fossil in Newer Pliocene rocks. 

 Donkey-engine. A small auxiliary engine 



used for pumping, lifting, <fcc. 

 Donjohn, (dou'jon). [The French word.]=: 



Keep: a strong tower within a fortification. 

 Donzella, (don-zel'la). A small eel-liko fish, 



found in the stomach of Holothuria. 

 Doom palm, (d66m)=Hyphsene thebaica= 



Gingerbread tree: a palm tree of Upper 



Dorado, (do-ra'do). [Sp. dorado, gilt-head, 

 a fish.]=Tho sword-fish. An unimportant 

 southern constellation. 



Dor-beetle=Geotrupes vulgaris : an insect 

 belonging to Coleoptera; also called clock 

 and watchman. 



Dorcatherium, (dor-ka-the'ri-um). [Gk. dor- 

 kas, deer ; thcrion, beast.] An extinct 

 Mammalian stag-like animal, known by 

 fossil remains in Miocene rocks. 



Dordogne caves, in S. of France, contain 

 remains of reindeer, &c., belong to Rein- 

 deer period, q.v. 



Doree, (do-ra'). [Dor6e, the French name.] 

 =Zeus faber : a sea-fish of a yellow colour, 

 belonging to Scomberidrc. 



Dorfel. A mountain peak in the moon. 



