TO CORRESPONDENTS. 



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 Beck, Mr. Redfield, Mr. J, D. Whelpley, Dr. J. Lawrence Smith, and various 

 others. 



The article on Meteoric Iron, by the junior Editor, announced last number, has 

 been postponed to give place to other correspondents. 



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ERRATUM. 



In Vol. XLii, No. I, in Dr. Hare's Objections to Mr. Redfield's theory, paragraph 

 1, line 13, for same, read successive. 



