1315.] Scientific Inlelligence. 233 



the statement respecting the discovery of the univalve in situ, which 

 will I trust afford a sufficient excuse, 



I ana, dear Sir, your obedient servant, 

 British Museum, Feb. 3, 1815. W. E. LeacH. 



V. The Caucasus. 



Engelhart and Parrot, during their travels in the Caucasus, 

 ascertained that some of the peaks of that vast Alpine country are 

 equal in height to Mont Blanc, in Switzerland. 



VI. Heliotrope. 



Dr. Macculloch, of Woolwich, has discovered heliotrope In the 

 Hill of Kinnoul, near Perth. This is the second time that this rare 

 mineral has been observed in Scotland. 



VII. Quantity oj Paper at present made in the United States of 



America. 



Tons. Reams. 



For Newspapers* .... 500 50,000 ...^150,000 



Books 630 70,0(J0 . . . 245,000 



Writing 650 111,000 ,333,000 



Wrapping 800 100,000 83,000 



VIII. Burning Gas in the Appennines. 



(To Dr. Thomson.) 

 SIR, 



In a preceding number of your Journal you have given an 

 account of a " jet of burning gas," which you say was discovered 

 by Sir H. Davy in the Appennines, and found by him to consist of 

 carbureted hydrogen. In addition to this, you make some inquiries 

 respecting the nature of the country, and the probability of the 

 existence of coal among the Appennines. 



Knowing the fact to liave been confidentially communicated in a 

 private letter written by Sir H. to this country, I confess I felt some 

 surprise at seeing it appear in a public journal ; nor was the 

 defective manner in which the statement was made in your Annals 

 of Philosophy calculated to diminish that ungrateful sensation. 



The mentioning of this gas occurs in Sir H. Davy's letter as one 

 of the many philosophical observations which that indefatigable 

 inquirer has been constantly making during his travels through Italy, 

 and from which the world will, 1 am confident, derive hereafter, 

 whenever he shall think it proper to make them public, very great 

 and useful information. As to tiie word discovery, it never once 

 occurs in speaking of this subject ; for Sir H. was perfectly aware 

 that the phenomenon, known to all classes of persons travelling on 

 tiic road from Florence to Bologna, had been particularly noticed 



• The number of newspapers printed annually in the United States is cstimaiecj 

 |K tM'coly-lwu and an hull' inillionii, 



