66 



in hot ammonia, potash, and large quantities of boiling water. It 

 forms gelatinous salts with the solutions of salts of baryta, stron- 

 tia, or lime, and also with those of lead ; green flakes with salts of 

 copper ; yellow flakes with sesquisalts of iron ; white flakes with 

 salts of protoxide of iron and silver. These precipitates shrink 

 much in drying, feel like mica, and dissolve in nitric and hydrochlo- 

 ric acids. 



The analyses of the acid yielded results indicating the formula 

 ^24 ■^20 ^32* ^^^^ baryta and lead salts appear to contain the acid 

 entire, which is unusual, their formula being MO, C^^ H^^ 0^^, in- 

 stead of the base replacing an equivalent of water. 



The authors are occupied with eugenic acid and the neutral oil of 

 cloves. 



4. Farther Remarks on the Intermitting Brine Springs of 

 Kissingen. By Professor Forbes. 



On the 7th of January 1839, I communicated to the Royal 

 Society of Edinburgh a pretty detailed account of the singular mineral 

 and gas springs of Kissingen, in Bavaria, then much less known than 

 at present to English travellers. I refer to this paper, printed in the 

 Edinburgh New Philosophical Journal, April 1839, for the details of 

 the most curious of these, a saline spring called Kunde-Brunnen, which 

 was at that time regularly periodic ; a copious and turbulent dis- 

 charge of brine, mixed with torrents of carbonic acid gas, recurring 

 six or eight times in the twenty-four hours. This phenomenon, 

 exactly as described in my paper, appears to have continued with 

 slight variation ever since, that is, for a period of twelve years, 

 subject, however, to (he variation formerly mentioned, that when the 

 brine is actively withdrawn by pumps, for the manufacture of salt, 

 the periods lengthen. I have no additional observations of import- 

 ance to offer on this spring, beyond the remarkable fact of the con- 

 tinuity of these variations, surely the more remarkable when we 

 recollect that the spring is entirely artificial, rising through an 

 Artesian bore 312 Bavarian feet deep. 



Much greater changes have taken place in the Schbnborn Quelle, 

 briefly referred to in my former paper as having a depth of 550 

 Bavarian feet, as overflowing once in seven or eight minutes, and 

 yielding a feeble supply of weak brine, containing only one and a 



