Nofices respecting Neiv Books. 2^ 



*' Hydroguretted sulphuret of soda is obtained in a similar 

 manner. 



" H3-droguretted sulphurets of baryles and of strontia are 

 yielded bv the solution of their sulphurets after exposure to 

 the air. Their powers are much less than those of the other 

 similar compounds. 



*' Hydroguretted sulphuret of lime is formed by boiling 

 lime with sulphur in water. The solution is the only liquid 

 capable of dissolving nitrogen gas in a notable quantity. 



" Hydroguretted sulphuret of ammonia, or, as it was for- 

 merly called, Boyle's or Beguine's fuming spirit, or volatile 

 liver of sulphur, is obtained in the form of a yellow fuming 

 liquor, by the ammonia and sulphur uniting, whilst in a 

 state of eras, during distillation, from one part of sulphur, 

 two of ammonia, and six of quicklime. Like the other 

 sulphurets it may be decomposed by acids; and if the con-? 

 centrated sulphuric acid is employed, a dangerous degree of 

 heat and explosive effervescence will be produced. 



" Thus it appears that the simj>Ie union of sulphur with 

 an alkaline or earthv base forms sulphurets; the union of 

 sulphuretted hydrogen with such bases forms the hydrosul- 

 phurcts, or sulphuretted hydrogurets ; and by the union of 

 the supersuiphuretted hydrogen, or tvdroguretted sulphur, 

 with similar bases, the hydroguretted sul])hurots are formed. 



*' Sulphur at 140° or 150'* Fahr. begins to attract oxygen, 

 and at 180'' or 196" manifests a faint blue light; but the 

 heat accompanying this combustion is so weak, tha,t the 

 sulphur may thus be burnt out of gunpowder without in- 

 flaming it. At 300° the combustion is accompanied by a 

 reddish light. At about 290° it is converted into vapour. 

 In oxygen jjas it burns extremely rapid, and with a most 

 vivid light. During its combustion, oxvgen combining with 

 its acidifiable base, forms an acid n)ore or less perfect, ac- 

 cording to the greater or less rapidity of the combustion." 



The sulphates are not less accurately detailed, and even 

 the anhydrous sulphate of lin)e, which is destitute of water, 

 and yields 44-88 acid, and 55*12 base, is not omitted. 



As gas lights have of late been the subject of much con- 

 versation, we subjoin the following extract from the account 



uf 



