USED IN NATURAL HISTORY. 



27 



BOG IROIC ORE. A ferruginous de- 

 posit, occurring in the bottom of 

 peat mosses, and marshy places, 

 owing to the presence of oxide of 

 iron, in solution in almost all wa- 

 ters. These ferruginous matters 

 sometimes form, below the soil, a 

 plate or pan, which is impermia- 

 ble to the roots of trees. 



BOLE A species of soap-stone ; a 

 friable earthy substance ; also, 

 termed Lemnian earth. 



BOLE'TUS. fr. gr. bolos, a field. A 

 fungus. Spunk, a kind of tinder 

 is manufactured from one species 

 of it. 



BOLUS. Lat. A mass, lump, or 

 mouthful. A ball. 



BOMBY'CES. Plur. of bombyx. 



BOMBYCI'LLA. fr. gr. bombux, a silk- 

 worm. The systematic name of 

 the chatterers. 



BO'MBYX. fr. gr. bombux, a silk- 

 worm. A genus of insects. 



BOPT'RUS. A genus of crustaceans 

 which resembles the extinct tri- 

 lobite. 



BoRAGi'xEfl?, or BORAGIWA'CE;E. 

 Name of a family of plants of 

 which the Borago is the type. 



BORDER. The brim or spreading 

 part of a corolla. 



BOREALTS. Lat. Northern. 



BORIC'HTHTS. fr. fr. borgne, one- 

 eyed or blind, and the Gr. ichthus, 

 a fish. Blind fish. 



Bos. Lat. An ox ; a bull. 



BOSSE. Fr. A hillock; a rounded 

 projection or elevation. 



BOTRT'OIDAL. fr. gr. botrus, a bunch 

 of grapes; eidos, resemblance. 

 Clustered like a bunch of grapes ; 

 covered with smooth, rounded 

 masses. 



BO'TRUS. Lat. A cluster of grapes. 



BO'TAXY. fr. gr. botane, a plant. 

 Natural history of plants. 



BOTRY'LLUS. fr. gr. botrus, a bunch 

 of grapes. A little cluster of 

 berrv-shaped bodies. 



BOULDERS. Erratic Blocks. A pro- 

 vincial term for large rounded 



blocks of stone, lying on the sur- 

 face of the ground, or sometimes 

 imbedded in loose soil, different 

 in composition from the rocks in 

 their vicinity, and therefore sup- 

 posed to -have been transported 

 from a distance, (p. 93, Book viii). 



BOURGEON. Fr. Leaf-bud. 



BOUTON. Fr. Flower-bud. 



BOVEY COAL. A kind of brown coal. 



BRAC'CATE. fr . lat. bracca, breeches. 

 A term applied to the feet of 

 birds when concealed by long 

 feathers descending from the tibia. 



BRACH'IAL (bratt-e-al}. fr. lat. bra- 

 chium, an arm. Belonging or re- 

 lating to the arm. 



BRACII'IATE. Branches opposite, and 

 each pair at right-angles with the 

 preceding. 



BRAC'HIOPOD (bra'ke-o-pod). fr. gr. 

 brachion, arm ; pous, foot. A mol- 

 lusk with a two-lobed mantle and 

 bivalve shell, (p. 88, Book v). 



BRACT. fr. lat. bractea, a thin leaf 

 of metal. A floral leaf different 

 in colour from other leaves. 



BRA'CTEJB. Lat. Bracts. 



BRACTEA'TE. Having bracts. 



BRACH Y'PTER^. -fr. gr. brachus, short ; 

 pteron, a wing. Having short 

 wings. The systematic name of 

 a family of divers. 



BRACHY PTEROUS. Applied to birds 

 whose folded wings do not reach 

 the base of the tail. 



BRACHY'PHY'LLUM. fr. gr. brachus, 

 short; phullon. leaf. A genus of 

 fossil plants. (Fig. 94, p. 61, 

 Book viii). 



BRA'CHYU'RA. fr.gr- brarhus, short; 

 aura, tail. A tribe of crusta'ceans. 



BRADFORD CLAY. An English bed 

 of the great o'olite, usually con- 

 sisting of a pale greyish clay, con- 

 taining a small proportion of cal- 

 careous matter, and inclosing thin 

 slabs of tough brownish lime- 

 stone. It abounds in fossil apio- 

 crinites. 



BRA'DYPUS. fr. gr. bradus^ slow 

 pous, foot. The sloth. 



