BOMB 



55 



BOltACITE 



Bomb, (bom). [Gk. bombos, humming .]= 

 Shell : a general term for explosive pro- 

 jectiles, especially for those used in sieges. 

 B. ketch=B. vessel : a small vessel for carry- 

 ing bombs, now called a mortar boat. 



Bombaceae, (boin-ba'se-e). [Bombax, q.v.]= 

 Cotton trees : tropical plants, usually trees, 

 with light spongy timber, belonging to Ster- 

 culiacese, sometimes considered as a separata 

 order. 



Bombardier beetle, (bom-bar-der'). [The F. 

 word.]=Brachinus crepitans : a beetle be- 

 longing to Geodephaga, which has a small 

 explosive apparatus in its abdomen, 



Bombax, (bom'baks). [Gk. bombyx, cotton.] 

 A large forest tree, the seeds of which have 

 cottony hairs, belonging to Sterculiacese. 

 B. pentandrum=Cotton tree of India. 



Bombazine, (bom-ba-zen'). [Gk. bombyx, cot- 

 ton.] A mixture of silk and worsted. 



Bombic acid, (bomTrik). [Bombyx, q,v.] An 

 acid obtained from the silkworm. 



Bombidae, (bom'bi-de). [Bombus, q.v.] 

 Humble-bees : insects, belonging to Hy- 

 menoptera, living in communities, and 

 building nests in trees, amongst stones, &c. 



Bombinator, (bom- bi-na'tor)= Yellow-bellied 

 toad=Rana bombina. 



Bombus, (bomTbus). [Gk. bombos, humming.] 

 Humble-bee= Humming-bee=:Dumble-bee : 

 wild social bee, an. insect the type of Bom- 

 bidse, q.v. 



Bombycidae, (bom-bl'si-de). [Bombyx, q.v.]= A 

 family of moths, including the silk worm moth. 



Bombycilla. [Bombyx, q. v. ] = Waxwing= 

 ^Chatterer: a bird, belonging to Dentiros- 

 tres; known also as Bombycivora, from eat- 

 ing bees. B. garrula= Bohemian waxwing. 

 B. Carolinensis= American waxwing=Cedar- 

 bird. 



Bombyx. [Gk. bombos, humming. >=0ak- 

 eggar moth : an insect, belonging to Lepi- 

 doptera, the larva of which is the silkworm. 



Bonaparte's classification of vertebrate ani- 



' ( Mammalia 



Educabilia, g^. 



Pecora 



Bruta 



Bestiaa 



Glires 



Insessores 



Grallatores 



Anseres 



Marsipobrancl li i 



Elasmobranchii 



Lophobranchii 



Pomatobranchii 



Marsipobrancliii 



Vertebrata 



Ineducabilia, 



Birds, ... 



Fishes,...' 

 I 



Bonasia, (bo-na'si-a). A bird belonging to the 

 grouse family, or Tetraonidse, q.v. 



Bonassus, (bo-nas'sus). [The Latin name.] 

 1. A variety of the bison, q.v. 2. Used by 

 Aristotle for an animal described as having 

 the head of a bull, aud the body and mane of 

 a horse.. 



Bond, (bond). [A.-S. bond.] In brick build- 

 ing, the method of union. English B. : al- 

 ternate rows of stretchers and headers. Flem- 

 ish B.: alternate stretchers and headers in 

 each row. Garden wall B.: three stretchers 

 and one header alternately. 



Bonds (of Frankland), The term used by 

 Frankland to express the centres of attrac- 

 tion of the atoms of chemical elements. A 

 monad is supposed to have but one, a dyad 

 to have two, a triad three, &c. 



Bone, (bon). [A.-S. ban.] Cartilaginous mat- 

 ter hardened by phosphate and carbonate of 

 lime, in which are many small spaces. B. 

 animals: Oken's term for Fishes. B. beds: 

 thin strata containing fossil bones, chiefly of 

 fish and reptiles. B. b lack= Animal black = 

 Animal charcoal=Ivory black: chiefly phos- 

 phate of lime and carbon; need as a decolor- 

 ising agent. Ivory black is also used as a 

 pigment. B. dog='B. shark, q.v. B. earth= 

 Phosphate of lime. B. liquor: a compound of 

 carbonate of ammonia and water. B. oil= 

 Dippel's oil= Animal oil: a tar-like fluid com- 

 pound of hydrocarbons, obtained from bones. 

 . phosphate=One form of calcic phosphate 

 =Ca 4 H.3PO4. B. s/iar=Acanthias vulgaris. 



Bonito, (bo'ni-to)=Thynnu8 pelamys=Scom- 

 ber pelemys : a fish, which devours flying- 

 fishes; a variety of the tunny. 



Bonnet, (bon'net). [The French word.] A pro- 

 jection at tho angle of a fortified wall. B. 

 JZeu/t=Rhombus maximus=Turbot, q.v. B. 

 mofce7/:=Macacus radiatus : a monkey whose 

 hair radiates from a central point on the crown. 



Bonus-henricus, ( bo-nus-hen-ri'kus ). [ The 

 Latin name. ] A plant=Chenopodium bonus- 

 henricus. 



Bony, (bo'ni). [Bone, q.v.] B. fishes: those 

 having a bony skeleton. B. horns: those of 

 oxen, goats, and other Ungulata; which are 

 not shed. B. labyrinth: in the ear, q.v. B. 

 _25U-e=Lepidosteus, a ganoid fish. B. scutes: 

 plates of hardened derinia found on arma- 

 dillos, and on some fishes and reptiles. 



Booby, (boo'bi.) [F. &ow&ie.]=Sula: a bird of 

 the pelican kind. 



Book scorpions=Cheliferida), q.v. 



Boom, (boom). [S. beam; D. boom.] A pro- 

 jecting pole, used in ships, at wharves, &c. 



Boomkin, (boom'kin). Booms fixed to the bow 

 of a ship. B. shrouds: ropes fastened to the 

 ends of boomkins to fix them. 



Bootes, (bo-6'tez). [The Greek name.]=Arc- 

 tophylax : one of the Northern Constella- 

 tions, of which Arcturus is the chief star. 



Bopyridse, ( bo-pi'ri-de). [Bopyrus, q.v.] A 

 family of sessile-eyed crustaceans, parasitic on 

 crabs, lobsters, &c. , 



Bopyrus, (bo'pi-rus). The typical genus of 

 Bopyridse. 



Bora, (b5'ra). [The local name.] A cold 

 Alpine north wind. 



Boracic acid (bo-ras'ik). [Borax, q.v.]= Boric 

 Besquioxide=Boracic anhydride and water: 

 a crystalline substance much used as a 

 flux: B 2 O 3 .3H 2 O. 



Boracite, (bo'ra-sit). [Borax, q.v.] . A haloid 

 mineral : a borate of magnesium. 



