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bursa, n., bers<d, bursse, plu., 

 bers'e (Gr. bursa, skin, leather); 

 also bursa nmcosa, mu-kozf-a, 

 burs89 mucosaB, plu., mu-koz'-e 

 (L. mucosus, slimy, mucous), 

 small sacs or cavities enclosing a 

 clear viscid liquid, found inter- 

 posed between surfaces which 

 move upon each other so as to 

 ensure their free and easy move- 

 ment: bursa patellse, pat-U'-le 

 (L. patella, a plate, a knee-pan), 

 the skin of the knee-cap ; the 

 subcutaneous synovial sac in 

 front of the knee-cap: bursiform, 

 a., bers'i-form (L. forma, shape), 

 shaped like a purse ; sub- 

 spherical. 



Burseracese, n. plu., bers'Zr-d'- 

 sZ-e (after Burser, a botanist of 

 Naples), the Myrrh and Frankin- 

 cense family, an Order of plants : 

 Bursera, n., bers'$r-d, a genus 

 of large trees of considerable 

 value which yield a 'balsamic and 

 fragrant resinous iuice. 



bursicule, n., bers-ik-ul, alsoburs- 

 icula, n., bers-ik'ul'd (L. dimin- 

 utive of bursa, skin), in bot.., 

 the part of the rostellum of the 

 Orchids, excavated in the form 

 of a sack: bursiculate, a*, bers- 

 ik'ul'dt, purse-like. 



Butea, n., but'8>a (after John, 

 Earl of Bute], a splendid genus 

 of flowering plants, Ord. Legum- 

 inosse: Butea frondoso, frond- 

 6z f -o (L. frondosus, leafy from 

 frons, a leaf), the Dhak tree of 

 the East Indies, yields a product 

 similar to Kino, and has bright 

 orange-red petals, and a black 

 calyx: B. superba, su-pertta (L. 

 superbus, proud), yields with the 

 preceding a beautiful dye, and roots 

 can be made into strong ropes. 



ButomaceaB, n. plu., but'dm-d's&e 

 (Gr. bous, an ox; temno, I cut), 

 the flowering Rush family, an 

 Order of plants: Butomus, n., 

 but' dm- us, a genus of aquatic 

 plants which receive their name 

 because they are said to cause the 



mouths of the cattle to bleed who 

 crop them: Butomus umbellatus, 

 um-bH-dt'-us (L. umbella, a little 

 shadow from umbra, a shadow), 

 the flowering rush, a beautiful 

 British aquatic plant. 



buttocks, n. plu., but'-tb'ks (Dut. 

 bout, the leg or thigh of an 

 animal), the protuberant part of 

 the body behind ; the seat. 



Buxus, n., buks'us (L. buxus, the 

 box tree, boxwood), a genus of 

 hardy evergreen shrubs, much 

 valued for its close, hard wood, so 

 useful in the arts, Ord. Euphor- 

 biacese : Buxus sempervirens, 

 s&mp-er''Vir'$nz (L. semper ', al- 

 ways ; virens, flourishing), the 

 bark of this species is said to be 

 alterative, and its leaves bitter 

 and purgative. 



byssaceous, a., bis-sd'shus (Gr. 

 bussos, L. byssus, fine flax), 

 resembling or consisting of fine 

 thread-like filaments : byssiferous, 

 a,, bis-sif'-Zr-us (L. fero, I bear), 

 producing or bearing a byssus: 

 byssoid, a., Us'-soyd (Gr. eidos, 

 resemblance), resembling very 

 slender threads like a cobweb: 

 byssus, n., bis'sus, the silky fila- 

 ments by which the common 

 mussel and other bivalve mol- 

 lusca attach themselves to other 

 objects, or to the sea bottom. 



Byttneriacese, n. plu., Ut'-ner-t- 

 d'-se-e (after Buttner, a German 

 naturalist), the Byttneria and 

 Chocolate family, an Order of 

 shrubs, some bearing showy 

 .flowers, others, as the Theobroma 

 cacao, producing the Cocoa of the 

 shops. 



cachexia, n., ka-k%ks f -i-a (Gr. 

 kakos, bad; hexis, habit), a viti- 

 ated or deranged condition of the 

 body: cachexia aquosa, a- kwozt a 

 (L. aquosus, abounding in water 

 from aqua, water), a dropsical 

 disease of sheep. 



Cactaceae, n. plu., kak-td'-sV-e (Gr. 

 kaktos, L. cactus, a prickly plant), 



