BOS 



are remarkable for their peculiar 

 odour. 



Boswellia, n., boz-w%l'-li>d (in 

 honour of Dr. John Boswell, of 

 Edinburgh), a genus of trees, 

 Ord. Burseracese, several of whose 

 species are called Olibanum or 

 frankincense trees, and inhabit 

 the hot and arid regions of 

 Eastern Africa and Southern 

 Arabia, producing fragrant juices 

 and resins which in their dry 

 state are used as frankincense, 

 especially the extract called' Olib- 

 anum ; the chief species are 

 Boswellia Carterii, kdr-ter'4-i 

 (after Carter)-, B. Bhau-Dajiana, 

 bdw-dddj'i'dn'd (from native 

 Indian names); B. Frereana, 



frer'-e-dn'-d (after Frere); B. 

 thurifera, thur-if'-Zr-d (L. thus, 

 incense, frankincense, thurts, of 

 incense ; fero, I bear). 



bot, n., b$t, or bots,, Wtz (Fr. 

 bout, end; Ger. butt, a short, 

 thick thing), a worm which in- 

 fests the intestines of horses, 

 being the Iarva3 of the horse gad- 

 fly said to be so called, 'bout,' 

 'bot,' or 'end-worms,' because, 

 after passing through the intes- 

 tines, they hang for some days 

 upon the margin of the funda- 

 ment beneath the tail, where 

 they occasion inconvenience and 

 distress, and first attract atten- 

 tion. 



botany, n., btit'dn-i (Gr. btitane, a 

 herb or plant), the science which 

 treats of plants, their structure, 

 functions, properties,, and habits, 

 and their classification and 

 nomenclature. 



bothrenchyma, n. , bo'th-rVng'-Mm-d 

 (Gr. bothros, a ditch or furrow; 

 engchuma, anything poured in, 

 an infusion), dotted or pitted 

 vessels with depressions inside 

 their walls. 



Bothriocephalus, n., loth'-ri>o> 

 sef'-dl-us (Gr. bothrion, a little 

 ditch, a little pit; kephale, ahead), 

 a genus of intestinal worms: 



I BRA 



Bothriocephalus latus, lat'-us (L. 

 Idtus, broad), the pit-headed 

 tape-worm, a Continental form 

 chiefly infesting Switzerland and 

 Russia, the germs of which are 

 conveyed, through water : B. 

 cordatus, Jcdr-ddt'-us (L. cordatus, 

 heart-shaped), a species infesting 

 the lower animals. 



Botrychium, n., btit-rik'i'um (Gr. 

 botrus, a, bunch of grapes; cheo, 

 I pour out, I scatter), a genus of 

 ferns, so named from the form of 

 their fructification, much like a 

 bunch of grapes, known by the 

 name of 'moon-worts,' Ord. 

 Filices : Botrychium virginicum, 

 ver-jin'ik'Um (L. virginicum, 

 pert, to a virgin), the largest 

 American kind, and named the 

 'rattlesnake fern' from these rep- 

 tiles abounding where they grow. 



botrytis, n., Wt'-rit-is (Gr. botrus, 

 & bunch of grapes), a genus of 

 fungi, whose little round seeds or 

 seed vessels resemble a bunch of 

 grapes: Botrytis bassiana, bds- 

 si'dn'-d (after J3assi r ,of Bologna), 

 the fungus which produces the 

 disease in the silkworm called 

 ' muscardine. ' 



bougie, n., bd'-zhe or boo-zhe' (Fr. 

 bougie, a wax candle or taper), a 

 long slender instrument made of 

 elastic gum, wax, or metal, for 

 assisting in the removal of ob- 

 structions in the oesophagus, 

 urethra, rectum, etc., or in the 

 treatment of stricture. 



Bovista, n., bd-vist f -d (a Latinised 

 form of its German name, . bofist), 

 a genus of fungi, characterised by 

 the enormous size they attain, 

 from 18 to 23 inches in diameter: 

 Bovista gigantea, jig'-dnt-ef-d (L. 

 giganteus, of or belonging to the 

 giants fromgigantes, the giants), 

 a very large and quickly-growing 

 fungus, which has increased from 

 the size of a pea to that of a 

 melon in a single night. 



brachia, n..plu., brak'-i-d (L. arms}* 

 two prominent white bands which 



