216 



Intelligence and Miscellanies. 



which, by some means, forms an equilibrium to the chemi- 

 cal action which disengages it. 



In producing gas in an apparatus similar to Papin's diges- 

 ter, surmounted by a little copper ball closed by a stop cock, 

 the ball was unscrewed and opened under a graduated bell 

 glass, in order to measure the volume of gas which it con- 

 tained, when it was ascertained that hydrogen disengaged 

 from water by zinc and sulphuric acid, possessed an elastic 

 force of more than 33 atmospheres, at 25° c. — Ferussac''s 

 Bulletin^ Juin, 1828. 



28. Sulphur. — The manner in which this substance is 

 affected by heat and by sudden cooling, has often claimed 

 the attention of chemists. The following detail of some ex- 

 periments on this subject, is given by J. Dumas. — Annales 

 de Chimie, Sep. 1827. 



Temperature. 



Sulphur. 



Suddenly cooled by immersion 

 in water. 



110° Cent. 



140° 



170° 



190° 

 220° 

 230 to 260° 



very liquid, yellow, 

 liquid, deep yellow, 

 thick, orange yellow. 



more thick, orange. 



viscid, reddish. 



less viscid, 

 brown. 



reddish 



very friable, common color, 

 very friable, common color, 

 friable, common color, 

 soff and transparent at first, but 



soon friable, common color, 

 soft and transparent, amber 



color, 

 very soft, transparent, reddish 



brown. 



30. Dr. Wollaston. — The death of this eminent philosopher 

 is announced in the London Journals. We hope to insert a 

 notice of him in the next number. He has had few equals, 

 and has probably left no superior. His inventions and dis- 

 coveries have been numerous, and every thing he did was 

 finished. Of him it may be truly said, nihil tetigit quod non 

 ornavit. 



We regret that the pressure of domestic articles, although 

 we have added a sheet, has obliged us to omit a copious 

 collection of foreign intelligence, which shall appear in 

 our next. 



