CONTENTS OF VOLUME XIX. 



NUMBER I. 



Page- 

 Art, I. Notes on a journey to Mauch Chunk and other An- 

 thracite regions of Penn., with plates and a map — 

 Editor, - ---_-_ i 



II. On the Coal Formations in New York and Penn. 



By Prof. Eaton, - - - - 21 



III. Description of Dr. Hare's Laboratory, &c. Univ. 



Penn., with a plate, - - - - 26 



IV, Memoir of Count Rumford ; by Baron Cuvier, 28 

 V. On Central Forces ; by Prof. Theodore Strong, 46 



VI. Direct demonstration of the Binomial Theorem in 



Algebra ; by David Gould, - - - 50 



VII. Directions for the preparation and preservation of 

 Animals, Birds, Fishes, &c. translated from the 

 German under the direction of Wm. C. Woodbridge, 52 

 VIII. On improvements in the Microscope ; by Edward 



Thomas, - - - - - 57 



IX. Notice of the Aranea aculeata, &;c. ; by Miss D. L. 



Dix, of Boston, with a plate, - - - 61 



X. List of the plants of Chile, by Dr. C. Bertero ; 

 translated from the Spanish, by W. S. W. Rusch- 

 enberger, M. D. U. S. Navy. - - - 63 



XI. Original and select Observations on the detection of 

 Adulterations ; by Enwm D. Faust, M. D. Co- 

 lumbia College, S. C. - - - 70 

 XII. Notice of the Academy of Natural Sciences of Phil- 

 adelphia; by a Member, - - - 88 



XIII. Notices of the Geology, &c. near the Bedford and 



Bath or Berkeley Springs ; by Dr. H. H. Hayden, 97 



XIV. The Hartz. — Physical Geography, State of Indus- 



try, &c. ; by Thos. G. Clemson, Mem. Roy. School 



of Mines at Paris, &c., with a plate, - - 105 



XV. Remarks upon the present mode of conducting Land 



Surveys in the United States ; by Edwin F. Johnson, 131 

 XVI. Remarks upon the salt formation of Salina, N. Y. 



and other places ; by Joshua Forman, Esq. 141 



XVII. Safety of Steam Boats.— Editor, - - 143 



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