TO CORRESPONDENTS. 



Papers will appear in our next number, by Mr. D. D. Owen, on the print of hu- 

 man feet in limestone ; by Mr. James T. Hodge, on the lead regions of Wiskon- 

 san and Missouri ; and by the Junior editor, on the meteoric iron of Texas, to- 

 gether with an analysis of the Honolulu meteorite. Also papers by Dr. Gray, and 

 Dr. Engelmann. 



Communications have been received from. Rev. James H. Linsley, Drs. J. T. 

 Plummer and Wm. H. Muller, Messrs. W. F. Channing and Jos. S. Travelli. 



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