248 Miscellaneous JVotices in Mineralogy, Geology, «^t. 



30. Coal found in Somers and in Ellington, ConnecticuL 



Additional extract from the letter mentioned above. 



I saw, a few days ago, a lump of coal which came from 

 Somers. I was informed that a considerable quantity might 

 be obtained near the spot from which this was taken. My 

 informant was unable to describe the kind of ground from 

 which the coal came ; all that he knew was, that it was 

 woodland. I believe that I never told you that I discover- 

 ed a small quantity of that substance on my farm last sum- 

 mer, it was found imbedded in shelly sand-stone, in a hol- 

 low between two hills, in ground of the secondary formation. 

 It was in the form of thin lamellas and burned freely when 

 ignited by a candle. The quantity found was very small. 



31. Geological character of the limestone of the Missouri 



Lead Mine region. 



Ronark. — In the " notice" of Mr. Schoolcraft's view of the Missouri lead 

 mines, (p. Go Vol. 3,) doubts were expressed by us respecting; his account of 

 the limestone of that region ; we doubted whether it could be primitive, 

 and were inclined to think it must be of the tranistion class ; we addressed 

 a letter to Mr. S. for specimens and explanation on this point ; the *' notice''^ 

 however was printed before Mr. Schoolcraft's letter arrived, but his letter 

 was written before he had seen the " notice." 



Extract of a letter to the editor from Mr. H. R. Schoolcraft, 

 dated Albany, Jan. 3l5?. 1821. 



I hasten to reply to your obliging favour of December 

 28th, which has this moment come to hand. Its delay is 

 attributable to my unexpected tarry at this city instead of 

 New- York ; and although it is probable that it is now too 

 late to make use of my reply in the way contemplated, it 

 may still be thought acceptable. 



" As to the primitive character of the Missouri mining 

 country" I am happy that your enquiry offers me the op- 

 portunity of saying that subsequent observations upon the 

 upper Mississippi, where the same formation exists, and a 

 more minute examination of specimens brought from Mis- 

 souri in 1818, have convinced me that the mines are seated 

 in truvntion lime^fnnf. It? texture i^' crystaline and grano- 



