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the stems; females solitary, sessile in 

 each axilla of the leaves. It has no pro- 

 per pericarp, but the calyx when ripe 

 becomes a sort of oblong-triangular com- 

 pressed sheath, with a ridge on each 

 side and two innocuous spines, diverg- 

 ing almost horizontally at the end. With- 

 in this is a single obovate seed, com- 

 pressed, and at bottom very sharp-point- 

 ed, which does not drop from its cover- 

 ing. Native of Tartary. 



CERATON1A, in botany, English ca- 

 rob tree, St. John's bread, a genus of the 

 Polygamia Trioecia class and order. Na- 

 tural order of Lome ntacex. Leguminosse, 

 Jussieu. Essential character : hermaphro- 

 dite ; calyx five parted ; corol none ; sta- 

 mens five ; style filiform ; legume coria- 

 ceous ; many seeded ; dioecous ; male 

 and female separate. There is but one 

 species, viz. C. siliqua, the carob tree, 

 which is a native of Syria, Palestine, 

 Egypt, Cyprus, Candia, Sicily, Apulia, 

 Spain, &c. 



CERATOPETALUM, in botany, a ge- 

 nus of the Decandria Monogynia class 

 and order. Calyx five-parted, permanent, 

 bearing the stamina ; petals five, pinnati- 

 fid ; antherse spurred ; capsule covered 

 in the bottom of the calyx ; two celled. 

 One species, a native of New Holland. 



CERATOPHYLLUM, in botany, a ge- 

 nus of the Monoecia Polyandria class and 

 order. Natural order of Inundatae. Nai- 

 ades, Jussieu. Essential character : male 

 calyx many-part# ; corol none ; stamens 

 sixteen to twenty ; female, calyx many- 

 parted ; corolla none ; pistils one ; style 

 none ; seed one, naked. There are two 

 species, viz. C. demersum, prickly-seeded 

 horn wort ; and C. submersura, smooth- 

 seeded horn wort. They grow in ditches 

 and slow streams, flowering in August 

 and September in Europe ; also in 

 Japan. It is common in Jamaica, called 

 there morass weed, and used to cover 

 fish, &c. when carried to any distance. 



CERBERA, in botany, a genus of the 

 Pentandria Monogynia class and order. 

 Natural order of Contorts. Apocineaa, 

 Jussieu. Essential character r contorted ; 

 drupe one-seeded. There are five spe- 

 cies, of which C. ahouai, oval-leafed cer- 

 bera, grows naturally in the Brazils, and 

 also in the Spanish West Indies in plen- 

 ty ; and there are some of the trees 

 growing in the British Islands of Ameri- 

 ca. This tree is about ten feet high, send- 

 ing out many crooked diffused branches, 

 which toward the top has thick succulent 

 leaves, about three inches long and near 

 two broad, of a lucid green colour, full 

 of a miiky juice, as is every part of the 



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tree. The flowers come out in loose 

 bunches at the end of the branches ; they 

 are of a cream colour. It flowers in July, 

 but never produces fruit in England. 

 The wood of this tree is exceedingly of- 

 fensive, and the kernels of the nuts are a 

 most deadly poison. 



CERCARIA, in natural history, a ge- 

 nus of the Vermes infusoria : worm in- 

 visible to the naked eye, pellucid, and 

 furnished w.th, a tail. There are 13 

 species, of which C. gyrinus is round, 

 with a sharf pointed tail ; found in ani- 

 mal infusiois; white, gelatinous, fore- 

 part nearl; globular. C. catellus ; body 

 three-parud, with a forked tail ; is met 

 with in waers where flowers have been 

 kept ; h'ad moveable, affixed to the 

 body by s point ; abdomen not so wide, 

 but twice as long as the head, and filled 

 with int-stines; tail shorter than the 

 head anl narrower than the abdomen, 

 ending it two bristles, which it can unite 

 and seprate at pleasure ; C. mutabilis, 

 changeble, cylindrical, red or green, 

 with a pointed slightly bifid tail ; found 

 in stagiant pools in such innumerable 

 myriad, as to cover the whole surface 

 with asheet of green or red, giving it 

 sometines the appearance of being ting- 

 ed will blood ; varies its posture from a 

 long clindrical body, larger in the mid- 

 dle, t< a nearly globular one ; the ex- 

 tremitis are pellucid. 



CEKJIS, in botany, English Judas tree, 

 a gens of the Decandria Monogynia 

 class ad order. Natural order of Lomen- 

 taceae. Leguminosze, Jussieu. Essential 

 charaier : calyx five-toothed, gibbous 

 below; corol papilionaceous ; standard 

 short beneath the wings ; legume. 

 Ther are two species, viz. C. siliquas- 

 trumcommon Judas tree ; and C. cana- 

 dens, Canada Judas tree, or red bud- 

 ding.ree. These trees are usually plant- 

 ed vth other flowering trees, for orna- 

 mers to pleasure gardens, and for their 

 sinftlar beauty deserve a place as well as 

 mo. other sorts. The wood is also beau- 

 tifdy veined with black and green, and, 

 takng a fine polish, may be converted to 

 may uses. 



EREBELLUM, in anatomy, the hind- 

 erpart of the brain. See AJTATOMY. 



jEREBRUM, in anatomy, denotes the 

 biin, but more particularly applies to 

 tb anterior and larger portion of the 

 bain, separated from the cerebellum by 

 te tentorium. See AXATOMT. 

 CEREMONIES, master of the, an officer 

 istituted by King James I. for the more 

 bnourable reception of ambassadors and 

 gangers of quality ; he wears about his 



