GEOLOGICAL SOCIETY, 



169 



Petrifactions." The proposed edition will be illustrated 

 by the notes and additions of the American editor, 

 who has been obligingly furnished with the original 

 plates by Dr. Goldfuss. Every one wishing well to the 

 progress of geology in this country, should, by his sub- 

 scription, encourage this undertaking. 



The lovers of science, and particularly of geological 

 science, will learn with interest that Mr. G. W. Fea- 

 therstonhaugh is at present engaged, under the autho- 

 rity of the United States government, in investigating 

 the geology and mineralogy of the Arkansas territory. 

 Mr. F. has a new and interesting field before him, with 

 talents and persevering industry, which render him pe- 

 culiarly qualified for this arduous and highly important 

 duty. The most important results, both as regards the 

 interests of science, and the permanent welfare of the 

 country, may be fairly anticipated from his labors. We 

 look with great interest for his report to Congress in 

 February next. 



The following is an extract of a letter recently re- 

 ceived from Mr. F. on his way through Virginia, dated 

 u Warm Springs, Bath county, Va. 



"As to the waters here, they deserve to have a 



volume written on them ; they have elicited much of my 



attention during my short stay here. I have obtained 



two or three facts respecting them which you may rely 



on: — First, as to their gaseous contents — the greater 



part of their volume is azotic gas ; next, carbonic acid 

 Vol. I.— W 



