GET 



214 



CHA 



two years to perform the service by which 

 he holds lands, so that he incurs the dan- 

 ger of the writ of cessavit. 



CESTO'IDE.S, a tribe of intestinal worms, 

 comprising those without external 

 Buckers. Only one genus is known, the 

 Ligula, inhabiting certain birds and fresh 

 water fish. 



CESTRA'CIONTS, a sub-family of sharks 

 found fossil in all strata, from the carbo- 

 niferous to the most recent chalk series. 

 The Cestracion Philippi, or Port Jackson 

 Shark, is the only living specimen of the 

 tribe. 



CES'TUS, xirrof- The marriage girdle 

 or girdle of Venus among the Greeks and 

 Homans. 



CESU'RA. See C^SCRA. 



CETA'CEA, ) an order of marine mam- 



CETA'CEANS, / miferous animals, includ- 

 ing the whale, porpoise, dolphin, &c. 

 They are warm-blooded and breathe air 

 by means of lungs, and they bring forth 

 young alive and suckle them. 



CETACEA HERBIVORA, herbivorous ce- 

 tacea. These constitute Cuvier's first 

 family of Cetacea, and comprise the ge- 

 aera Manatus, Halicore (dugong, siren, 

 sea-cow, &c.), and Stellerus. They fre- 

 quently leave the water to seek pasture 

 on shore. The teeth have flat crowns, 

 "hey have two mammae on the breast, 

 s;id hairy mustachios, two circumstances 

 fhich, observed from a distance, as they 

 raise the anterior part of the body verti- 

 cally from the water, give them some 

 resemblance to human beings, and have 

 probably occasioned those fabulous ac- 

 counts of tritons and sirens which some 

 Travellers pretend to have seen. 



CETACEA ORDINARIA, ordinary Cetacea. 

 These form Cuvier's second family of Ce- 

 tacea, and comprise the genera Delphinus 

 (dolphin) ; Phocaena (porpoise) ; Monodon 

 (narwhal); Physeter (cachalot or sper- 

 maceti whale), and Bala?na (true whale). 

 The ordinary cetacea are distinsuislied 

 from the preceding by the singular appa- 

 ratus from which they have received the 

 name of Blowers. 



CE'TE, %.-r,To;, a whale. The sixth order 

 of Mammalia in the Systema Natura of j 

 Linnaeus. 



CET'IC ACID, a name given by Chev- 

 reuil to what he supposed to be a pe- 

 culiar acid resulting from the saponifica- 

 tion of cetine, but which he has since 

 found to be merely a mixture of margaric 

 acid and cetine. 



CE'TIXE, a name given by Chevreuil to 

 spermaceti, from ce.te, a whale. 



CETO'NIA, a genus of coleopterous in- 

 sects commonly termed gold-beaters, from 

 their brilliant golden green colours. They 

 are common on flowers, and frequently 

 on tnose of the rose and elder 



CE'TUS (Latin), the whale. The nanr? of 

 a large constellation in the southern He- 

 misphere containing 97 stars. The most 

 brilliant is Menkar, situated in the upp..r 

 mandible. 



CEV'ADIC ACID. By the action of pot- 

 ash on the fatty matter of the cevadilla, 

 an acid is obtained which is called the 

 cei-adic. 



CEY'LANITE, a dark-green or black va- 

 riety of dodccahedral corundum, which 

 occurs in the sand of the rivers of Ceylon, 

 from which island it is named. 



CHAB'ASITE, rhombohedral zeolite ; the 

 chabasic of Hatty, and schabasit of "Wer- 

 ner. The mineral is usually white, but 

 has sometimes a rosy tinge. Silica forms 

 about 50 per cent, of the whole. 



CHA'CONE or CIACONE (Span.), a kind of 

 dance resembling a saraband, of Moorish 

 origin. 



CHJERopHYi/LrM, a genus of small 

 plants. Pentandria Digynia. Name from 

 %au$ca, to gladden, and <pyAA.v, a leaf, in 

 allusion to the luxuriance of its foliage. 

 The common chervil or cow-pareley, 

 sweet cicely, and bastard hemlock are 

 species. 



CHJJ'TODON- a genus offish abundant in 

 the seas of hot climates, where they fre- 

 quent rocky shores. They are adorned 

 with the most beautiful colours, and are 

 reckoned good eating. They take their 

 name from their teeth, which in length 

 and tenuity resemble hairs collected in 

 close rows, like a brush. 



CH^ETOP'TEKI-S, a genus. Class Arti- 

 culata, order Vorsibranchiata, Cuv. The 

 mouth has neither jaws nor proboscis. 

 The animal is provided with nine pair of 

 feet, and a pair of long silky fasciculi, re- 

 sembling wirvgs. The only specifs known 

 is about 10 ir.ches long, and inhabits a 

 tube resemoing parchment. It is found 

 at the Antilles. 



CHA'FERT. In iron-works, a forge in 

 which an ancony or square mass of iron, 

 hammered into a bar in the middle, with 

 its ends rough, is reduced to a complete 

 bar, by hammering down the ends to the 

 shape of the middle. 



CHAFE-WAX, an officer belonging to the 

 lord chancellor, who tits the wax for 

 sealing writs. 



CHAF'FER, a small portable furnace. 



CHAFF-WEED, a plant, the bastard pim- 

 pernel (Centunculus) ; also cudweed, a 

 species of Gnaphalinm. 



CHAF'FT PALEACEOUS, when a surface is 

 covered with small, weak, erect, mem- 

 branous scales, resembling the chaff of 

 corn. 



CHAIN. In sun-eying, a measure of 

 length, composed of a certain number 

 of links of iron wire, serving to take 

 the distance between two places. Qun- 

 tcr'5 chain consists of 100 such links, each 





