Papers by Dr. Hildreth, Dr. Gray, Mr. E. E. SaJisbuiy, Dr. Hare, Dr. Jv Law- 

 rence Smith, Prof. C. B. Adams, and Piof. J. W. Benedict, will be inserted in the 

 next number. 



Numerous printed papers and boolcs, both foreign and domestic, have been re- 

 ceived, and will be found acknowledged in our usual list in this number : some of 

 them will be noticed in due course. 



Noticerof the valuable work of J. Pye Smith, (2d edition.) and of Dr. Daubeny's 

 Sketch of American Geology, are unavoidably postponed to the next number. 



The titles of communications and of their authors, must be fully given. 



Authors sliould always specify at the head of their MSS. the number of extra 

 copies of their communications which they may wish to have printed. 



Return proofs, not to be sealed, or inscribed with any thing except corrections. 



Notice always to be given when communications sent to this Journal, have been, 

 or are to be, published also in other Journals. 



New Work on Agricultural Chemistry and Physiol- 

 ogy, by Prof. Ltiehig. 



(Early in the ensuing season will be published in 1 Vol. large 12mo.) 



ORGANIC CHEMISTRY IN ITS APPLICATIONS TO AGRICULTURE AND 

 PHYSIOLOGY. BY JUSTUS LIEBIG, M. I)., PH. D., F. R. S., M. R. I. A., 



Professor of Chemistry in the University of Giessen ; Knight of the 

 Hessian Order. Memher of the Royal Acadenfiy of Sciences of 

 Stockhohn ; corresponding member of the Royal Academies of Sci- 

 ences of Berlin and Munich ; of the Imperial Academy of St. Peters- 

 burg ; of the Royal Institution of Amsterdam, etc. etc. 



Edited from the manuscript of the author, by 



Lyon Playfair, Ph. D. 



London, Taylor &, Walton, 1840. 



First American from the second London edition, by 

 B. SiLLIMAN, Jr., A. M., 

 Assistant in the departments of Chemistry, Mineralogy and Geology, 

 in Yale College ; Jimior Editor of the American Journal of Science ; 

 Member of the Lyceum of Nat. Hist. New York ; of the Boston 

 Society of Natural History, &;c. 



Wiley Sc Putnam, 161 Broadway, New York, and 35 Paternos- 

 ter Row, London. 



(jj** For an important notice to Subscribers to this Journal, see 

 third page of the cover. 



