SOD 



SOD 



fcribed by the phyfician. The dofe is from ^fs to jij; 

 but in the efflorefcent ftate, half of thele quantities is 

 fufficient. 



The " tartarized foda" (fee Carbonat of Soda and 

 Natron) is prepared, according to the Lond. Ph., by 

 dinblviiig 20 oz. of fubcarbonate of foda in lo pints of 

 boiling water, and adding gradually 2 lbs. of fupertartrate 

 of potafs in powder ; filtering the folution through paper ; 

 then boiling till a pellicle is formed on the furface, and fel- 

 ting it afide to cryftallize ; then pouring off the water from 

 the cryllals, and drying them on bibulous paper. 



The " tartrite of potafs and foda," formerly Sal Ru- 

 PELLENSis (which fee), is prepared, according to the 

 Edinb. Ph., from carbonate of foda and fupertartrite of 

 potafs, in the fame manner as Tartrite of Potafs ; which 

 fee. 



The "tartrate of foda and kali," of the Dub. Ph., is 

 formed by difiolving 20 oz. of carbonate of foda in 10 pints 

 of boiling water, and gradually adding 2 lbs. of cryftals of 

 tartar, reduced to a very fine powder ; filtering the folution 

 through paper, evaporating it, and fetting it afide, that, 

 as it flowly cools, cryltals may be formed. Mr. T. Thom- 

 fon obferves, that of the three appellations of this fait, that 

 of the Dublin college is the leaft exceptionable ; the London 

 name conveying an evidently erroneous notion of the prepa- 

 ration, and the Edinburgh college incorredly denominating 

 it a tartrite. 



This fait has a bitter faline tafte. Its cryftals are large, 

 regular, tranfparent, hard, rhomboidal, fix-fided prifms ; 

 very (lightly efflorefcent, and foluble in five parts of water 

 at 60°. It is decompofed by the ftrong acids, muriate of 

 barytas, lime, and by a red heat. The conltituents of 

 too parts of this fak, according to Schulze, are 41.3 of 

 tartaric acid, 14.3 of potafs, 13.3 of foda, and 3 1. 1 of 

 water. 



Tartrate of potafs and foda is a cooling and not very un- 

 palatable cathartic. It was introduced into praftice by M. 

 Seignette, an apothecary of Rochelle, and the preparation 

 kept a fecret until it was difcovered and pubhfhed by 

 Boulduc and Geoffrey in 1 73 1. It operates moderately, 

 and without exciting much irritation : hence it is well fuited 

 to nephritic and puerperal cafes. The dofe is from 5j to 

 Jjfs, diflblved in any convenient vehicle. Woodville. 

 Thomfon's Lond. Diip. 



Soda, in Medicine, a word of Arabic origin, nearly 

 fynonimous with cardialgla, and heart-burn, fignifying any 

 fenfe of burning heat in the ftomach, arifing from acidity or 

 acrid humours. See Cardialgia and Indigestion. 



The term foda has, liowever, been confidered by fome 

 writers as alfo fignifying heat and pain of the head. 



Soda, in Geography, a town of Arabia, in the province 

 of Nedsjed ; 180 miles E. of Medina. 

 Soda, in Natural Hiflory. See Kam. 

 Soda Subethka, a term uled to exprefs a heavy and dull 

 pain in the head. 



SODADA, in Botany, from its Arabic name Sodud. 

 Forlk. iEgypt-Arab. 81. Jud. 243. — A genus of the na- 

 tural order of Capparides, which is undoubtedly diilindl, 

 and may perhaps be tolerated under the above appellation, 

 though of avowedly barbarous origin, like Aucuba, and one 

 or two fimilar names, of eafy pronunciation. We do not, 

 however, willi to fanftion any fuch, but leave them to 

 future opportunities of a thorough and authentic reform. 

 In the prefent inflance, at leaft, we attempt no amendment, 

 becaufe we have not materials to defcribe the genus under 

 confideration. Colonel Hardwicke has brought, from the 

 Eaft Indies, either Forfkall's identical plant, or another 



fpecies of the fame genus. Forflcall defcribes his as 

 follows. 



S. decidua. Calyx of four unequal leaves. Petals four, 

 unequal. Stamens inclining. CapfiJe (talked. 



A d.\S\i{efbrub, with diftant, alternate, fpreading branches, 

 about two inches long, with a pair of Ihort awl-fliaped 

 fpmcs at each bud. Leaves feffile, oblong, deciduous, rarely 

 prefent. Flo-juerflalls between the fpines, fingle-flowered, 

 three together. Flowers red. Calyx coloured, deciduous ; 

 its upper fegment very large, gibbous, comprefled, often 

 fplit at the fide ; the reft equal, linear-lanceolate, fringed. 

 Two upper ^c/fl/r ovate, pointed, flat, at firlt hidden under 

 the upper leaf of the calyx ; two lower narrower, alternate 

 with its lower leaves, downy at the under fide and edges. 

 Stamens eight, unequal, thread-fliaped, longer than the 

 petals, brownilh-grecn. Germen globofe, with four fur- 

 rows on a ftalk as long as the ftamens. Style awl-fhaped. 

 Stigma acute. Fruit red, bigger than a hazel-nut, eatable 

 when drelled before it is ripe. This Ihrub is common 

 throughout the country of Yemen. 



SODALES Augustales. See Augustales. 



SODALITE, in Mineralogy, a ftone which derives its 

 name from the large portion of mineral alkali that enters 

 into its compofition. Its colour is a blueilh-green. It 

 occurs both cryftallized and maflive : the cryftals are dode- 

 cahedrons, with rhomboidal faces. The llrufture is la- 

 mellar, with joints in two directions. The frafture is 

 conchoidal : it has a (kining and refinous luftre, but the 

 luftre of the frefh frafture is vitreous ; it is tranflucent, and 

 yields with difficulty to the knife. The fpecific gravity 

 is 2.37. It is infufible by the blowpipe. 



The conftituent pans of fodalite, as given by different 

 chemifts, vary. 



SODALITIUM, among the Anglo-Saxons, was the 

 name of a voluntary affociation, the objeft of which was 

 the perfonal fecurity of thofe who joined in it, and which 

 the feeblenefsof government at the time rendered neceflary. 

 Among other regulations, which are contained in one of 

 thefe ftill extant, the following deferves notice : If any af- 

 fociate (liall either eat or drink with a perfon who has killed 

 any member of the fodalitium, unlefs in the prefence of the 

 king, the bifhop, or the count, and unlefs he can prove 

 that he did not know the perfon, let him pay a great fine. 

 Hicks Dill. Epift. apud Thef. Ling. Septentr. vol. i. 

 p. 21. 



SODBURY, Chipping, anciently Sopeberie, in Geo- 

 graphy, a fmall parifh, containing only 90 acres, and market- 

 town, in the lower divifion of the hundred of Grombald's- 

 Afh, in the county of Gloucefter, England, is fituated 

 12 miles N. from Briltol, 30 S. from Gloucefter, and 113 

 W. from London, at the foot of the Great Howby hill, a 

 continuation of that chain which extends from north to 

 fouth through the county. This, and the two adjoining 

 pariflies of the fame name, were fo called from the berie, or 

 camp, which is found on the fumm.it of Old Sodbury. 

 Cliipping diftinguifties it as a market-town, and was firtl 

 ufed when the market was ellablifhed, in the reign of 

 Henry III. The town confifts of one long ftreet, and is 

 the great thoroughfare between Briftol and the eaftern part 

 of the county. The church confifts of a nave and two aifles, 



with 



