COB 



he prefers for admiiiiftering clyfters is a fimple bag or 

 OK -bladder, holding two or three quarts, tied to the end of a 

 wooden pipe about fourteen or fifteen inches long, and an 

 inch and a half in diameter where the bag is tied, and taper- 

 ing to the extremity, where the thicknefs fhould fuddenly 

 incrcafe, and be rounded off to the point as fmooth as poffi- 

 ble. The hole through the pipe may be made fuificiently 

 large for admitting the end of a common funnel, by which 

 the liquor may be poured into the bag. Mr. Clark recom- 

 mends the following clyfters for the feveral purpofes to 

 which they are applied. An emollient clyfter may be com- 

 pofed of two or three quarts of the water-gruel, 6 oz. of 

 coarfe fugar diffolved in the gruel, and the fame quantity of 

 olive-oil added to it. For a laxation clyfter, he direfts 

 two or three quarts of thin water-gruel, 8oz. of Glauber's 

 fait (or common fait), and 6oz. of ohve-oil. For 2. purging 

 clyfter, he recommends 2 oz. of fenna, two quarts of boiling 

 water, the fenna being infufed and the liquor ftrained off, 

 with the addition of fyrup of buckthorn and common oil, of 

 each 40Z. An anodyne clyfter may be prepared with one 

 pint of the jelly of common ftarch, or infulion of linfeed, 

 and I oz. or about two table-fpoonsful of tinfture of opium. 

 For a nutritive clyfter, he diredls three quarts of thick water- 

 gruel well boiled ; and in fome cafes milk-gruel might be 

 fubftituted with advantage. For a diuretic clyfter, in cafes 

 of ftrangury, or obftruftions of the feminary paflages, he 

 recommends i oz. of caftile foap diflolved in two quarts of 

 warm water, and the addition of 2 oz. of Venice turpentine, 

 previoufly beaten up with the yolks of two eggs. 



COACHES, Hackney, col. 4, line 8 from bottom, 

 add — By ftatute 55 Geo. III. c. 159. f. 2. the com- 

 miffioners are empowered to licenfe hackney chariots : and 

 by an aft pafled July 11, 18 17, the holders of licences may 

 drive either a coach or a chariot under the fame licence ; 

 provided that they do not at the fame time drive more than 

 one, which is to be exprefled in the licence, under a penalty 

 of 10/. or revocation of the Ucence. 



COAL, col. 13, 1. 3 from bottom, for 3 92 Grey, &c. 



r- 21 92 Grey, &c. Col. 20, 1. 12, for eafterly r. wefterly. 



CO ALB ROOK, or Colebrook Dale, in Geography, a 



townfiiip of Berks county, in Pennfylvania, containing 792 



inhabitants. 



COBALT, col. 7, 1. 6 from bottom, for or r. on. 

 Cobalt, in Chemijlry, the name of a metal. Some cir- 

 cumftances omitted in dieir proper place require to be men- 

 tioned here. 



The fpeciiic gravity of pure cobalt, according to Taffaert, 

 is 8.5384; according to Lampadius it is 8.7. It melts at 

 afcout 130° of Wedgwood's fcale, and is not capable of 

 being volatihzed by any degree of heat we can excite. 

 Like iron, it is attrafted by the magnet, and according to 

 Wenzel is capable of being converted into a magnet, pre- 

 cifely fimilar in its properties to the common magnetic 

 needle. 



There are two oxyds of cobalt, the protoxyd or blue, and 

 the peroxyd or black oxyd. 



The protoxyd difTolves in acids without effervefcence, 

 and feems to form the bafis of moft of the falts of cobalt. 

 According to Rothoff, it is compofed of 



Cobalt 

 Oxygen 



100 

 27.36 



Prouft found the proportion of oxygen confiderably lefs, 

 that is to fay, only 19.8 with 100 of the metal ; and Kla- 

 proth ftiU lefs, or about 18.0. If, with Dr. TTiomfon, we 



COL 



confider Rothoff's analyfis moft entitled to confidence the 

 weight of the atom of cobalt will be 36.25. * 



When the protoxyd of cobalt, newly precipiuted from an 

 acid, IS dried by heating it in the open air, it affumes a flea- 

 brown colour, which gradually deepens till it becomes 

 black. This is the peroxyd of cobalt. It diffolves with 

 effervefcence in muriatic acid, and a great quantity of 

 chlorine is evolved. From the experimenU of Rothoff, it 

 appears that tliis oxyd is compofed of 



Cobalt - - - 100 



Oxygen - - . 36.77 



Hence it appears to be compofed of two atoms cobalt, 

 and three of oxygen ; and on this fuppofition, the weight of 

 its atom will be 102.5. 



COCALICO. Add — containing 4024 inhabitants 

 COCAMA, r. fee Maynas. 



COCCINELLA, 1. 39, add— Thefe mfefts are com- 

 monly known under the name of lady-birds. The C. 

 y-punftata, or that of a 7-fpotted body, makes its appear- 

 ance in the advanced ftate of fpring and middle of fummer, 

 and in every field and garden. One of the moft beautiful of 

 the Enghfti fpecies is C. i8-punftata of Linnaeus, which is 

 Uttle more than half the fize of the common red bead, and i% 

 of a bright yellow colour, vsdth numerous (generally 18) 

 black fpecks. 



COCCIUM, 1. 4, r. Rlbchefter. 

 COCCOLITE. See Mineralogy, Addenda. 

 COCHIN-CHINA, col. 8, 1. 11 from bottom, for 

 winged r. wing. Col. 10, 1. 12, for men r. women. 



COCKBURNE, I. 2, for Grafton r. Coos. Add— It 

 contains 142 inhabitants. 



COCKE, a county of Eaft TenneflTee, containing 5154 

 inhabitants, of whom 436 are flaves. 

 COCKERMOUTH, I.40, r. 2964; I.41, r. 6c2. 

 CODORUS. Add — It contains 1975 inhabitants. 

 COELACHNE, in Botany, from y.a.y.o;, empty, and cix"i 

 a hujk, alluding to the inflated glumes. — Brown Prodr. N. 

 HoU. v. I. 187. — Clafs and order, Triandria Digynia. Nat. 

 Ord. Gramina. 



EfT. Ch. Calyx of two nearly equal, very blunt, tunud 

 valves, two-flowered. Florets of two valves, without awns ; 

 the uppermoft ftalked, female. Neftary of two fcales. 

 Stigmas feathery. Seed unconnefted, cylindrical, acute at 

 each end. 



I. C pulchella. Found by fir J. Banks, in the tropical 

 part of New Holland. A httle fmooth llender graft, 

 refembling a diminutive Briza, very remarkable for the 

 fmaller, or unpcrk&, Jloret being female, not male. 



COFFEE, col. 13, 1. I, r. 49, and 98 ; 1. 15, r. loc. 

 Col. 14, 1. 29, r. 43. 

 COHASSET, 1. 3, r. 994. 



COINAGE, col. 2, 1. 4 from bottom, Plate III.//. 1. 

 Mifcellany. 



COIT's Gore, in Geography, a town of Franklin county, 

 in Vermont, having 193 inhabitants. 



COITSVILLE, a townftiip of Ohio, in the county of 

 Trumbull, having 429 inhabitants. 



COKE, Sir Edward, 1. 3, r. Micham. 

 COLBERT, John Baptist, 1. 16, r. XIV. 

 COLCHESTER. In 181 1, the borough of Colchefter 

 contained 21 11 houfes, and 12,544 perfons ; 5400 being 

 males, and 7144 females: 480 famihes employed in agri- 

 culture, and 1152 in trade and manufaftures. 



Colchester, in America, 1. 7, add — containing, in i8io, 



26^7 



