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but now it deans simply to Institute an 

 action. 



SUIT AND SERVICE. In fetidal law, the 

 duty of feudatories to attend the courts 

 of their lords or superiors, in time of 

 peace ; and in war to follow them, and 

 perform military service. 



SUIT-COVENANT. In law, a covenant or 

 agreement to sue at a certain court. 

 SUIT'OR. 1. In law, one who sues or 



prosecutes a demand of right. 2. A 



party in a suit, whether as plaintiff, de- 

 fendant, petitioner, appellant, witness, 

 juror, or the like. 



SU'LA. The Booby: a suh-genus of 

 palmipede birds, included in the genus 

 Pelicanus, Lin. Sula is the name of the 

 common species of the Ferae Islands, but 

 extended to all the tribe by Brisson. See 

 BOOBY and PELICANUS. 



SUL'CATE, Lat. sulcatus, furrowed: 

 marked with deep lines running length- 

 ways. Applied to steins, leaves, seeds, 

 &c. , of plants ; and to shells. 



SULPHAMETH'YLENE. A crystallisable 

 compound, obtained by treating methy- 

 lene with liquid ammonia. It is very 

 deliquescent. 



SUL'PHAMIDE. A Tvhite light powder, 

 obtained by combining dry ammoniacal 

 gas and anhydrous sulphuric acid. When 

 heated, it melts into a clear liquid, which 

 concretes on cooling into a bisulphate of 

 ammonia. 



SUL'PHATE. A salt formed by the union 

 of the sulphuric acid with a salifiable 

 base. The sulphates are an important 

 class of salts, the principal ones of which 

 are (1.) Alum, sulphate of alumina and 

 potash ; (2.) Blue vitriol, sulphate of cop- 

 per; (3.) Green vitriol or copperas, sul- 

 phate of iron; (4.) Epsom salt, sulphate 

 of magnesia; (5.) Glauber's salt, sulphate 

 of soda; (6.) Sulphate of potash; (7.) 

 White vitriol, sulphate of zinc ; (8.) Sul- 

 phate of mercury ; (9.) Sulphate of ammo- 

 nia; (10.) Gypsum, selenite, plaster of Paris, 

 alabaster, sulphate of lime; (11.) Sulphate 

 of antimony ; (12.) Sulphate of quinine, 

 much used in medicine; (13.) Sulphate 

 of manganese, used by calico-printers. 

 SCL'PHITE. A salt formed by the com- 

 bination of a definite quantity of the sul- 

 phurous acid with a base. 



SCL'PHOBESZIDE. A substance ob- 

 tained in regular colourless crystals, by 

 treating benzine with sulphuric acid. It 

 consists of two atoms of benzine combined 

 with one atom of sulphuric acid. 



SCLPHOCET'IC Acii>. An acid formed 

 by placing ethal in contact with sulphu- 

 ric acid, and applying heat: the sub- 

 stances combine and form the acid in 

 question. It is thus named because the 

 basis appears to be hydrate of cetene com- 

 posed of two atoms of cetene and one 

 atom 01 water. 



L-LPHOCY'.VNIC ACID. Sulpho-prusgic 

 acid. Sulphuretted chyazic acid. A 

 colourless, transparent liquid acid, pos- 

 sessing a strong odour, somewhat resem- 

 bling acetic acid, obtained from sulpho- 

 cyanale of potash by a tedious process. 



SCLFHOGLYCER'IC ACID. An acid which 

 may be obtained by treating glycerine 

 with sulphuric acid. It has not yet been 

 insulated. 



SULPHO-INDIOOT'IC ACID. A solid, dark- 

 blue substance, soluble in water, of an 

 acid and astringent taste, obtained by 

 the action of sulphuric acid on indigo. 

 The process is laborious and intricate. 

 The hypo-sulpho-indigotic acid is very 

 similar to the sulpho-indigotic. 



~ DLPH'OMETH'YLIC ACID. A crystallisable 

 acid, readily obtained from sulphomethy- 

 late of baryta. This again is formed by 

 passing anhydrous sulphuric acid intc 

 pyroxilic spirit, and supersaturating the 

 liquid with barytes. The sulphomethylic 

 acid may perhaps be regarded as a bisul- 

 phate of methylene. 



SULPHONAPH'THALIC ACID. A crystal- 

 lisable acid, considered as a compound of 

 two atoms of sulphuric acid and one atom 

 of naphthaline. It forms salts called sul- 

 phonaphthalates. The hyposulphoiiaphthalic 

 acid is obtained in the form of a white 

 powder from the sulphonaphthalate of 

 baryta. 



SOI/PHO-SAI.TS. These are merely double 

 sulphurets, many of which may be pre- 

 pared bypassing a stream of sulphuretted 

 hydrogen into a solution of an oxisalt . 

 the hydrogen of the gas unites with the 

 oxygen of the base, forming water, and 

 the sulphur of the gas takes the place of 

 the oxygen, converting the base into a 

 sulphuret instead of an oxide. 



SUL'PHOVINIC ACID. CEnothionic acid. 

 A peculiar acid generated during the pro- 

 cess for obtaining sulphuric ether. 



SUL'PHUR. Brimstone. A well-known 

 simple combustible substance, found very 

 abundantly in depositions, in sublimed 

 incrustations, on the surface of certain 

 waters near volcanoes, and in combina- 

 tion with many metals. It is found in 

 greatest abundance and purity in the 

 neighbourhood of volcanoes, modern or 

 extinct, as at Solfatara in Italy ; but all 

 those ores known by the name of pyrites, 

 of which there are a vast variety, are 

 combinations of sulphur with different 

 metals. That which is manufactured in 

 this country is obtained by the roasting 

 of pyrites. "When melted (at 226 Pah.), 

 and cast in cy 1 indrical moulds , it is termed 

 rough or roll sulphur ; when this is puri- 

 fied by sublimation, it is called sublimed 

 sulphur, and often flowers of sulphur, and 

 is in the form of a bright yellow powder. 

 "When sulphur is melted and allowed to 

 cool in the air it is yellow and very 



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