CONTENTS OF VOLUME XXIV, 



NUMBER I. 



Page. 

 Art. I. Essay on the Georgia Gold Mines ; by William Phillips, 



Engineer, _...._- l 



II. Method of Conducting the Canal Surveys in the State of 



New York ; by E. F. Johnson, Civil Engineer. 19 



III. An Estimate of the Philosophical Character of Dr. Priest- 



ley; by William Henry, M. D. F. R. S., &c. &c. 28 



IV. Motions of a System of Bodies ; by Prof. Theodore 



Strong. - __._-__• 40 



V. Observations on the Saliferous Rock Formation, in the 



Valley of Ohio ; by Dr. S. P. Hildreth, of Marietta, 46 



VI. On the Expression of the sides of Right-angled Trian- 



gles, by Rational and Integral numbers ; by Rev. Daniel 

 Wilkie, ...,..-. 68 



VII. Plan of the Locks of Cincinnati, Ohio ; by Darius Lap- 



ham, Assistant Engineer, _ . - - - 70 



VIII. On the methods of describing various curves for Arches; 



by J. Thomson, Civil Engineer, Nashville, Tenn. 73 



IX. A new mode of developing Magnetic Galvanism; by John 



P. Emmet, Prof, of Chemistry in the University of 



Virginia, .__-_.. 78 



X. On the Orthography of Hebrew words in the Roman 



character ; by Prof. J. W. Gibbs, Yale College, - 87 



XI. On the Transition Rocks of the Cataraqui ; by R. H. Bon- 



nycastle, Capt. R. En., . _ _ . - 97 



X. An analytical examination of Prof Babbage's " Economy 



of Machinery and Manufactures." - - - 105 



XI. Supplement to the " Synopsis of the Organic Remains 



of the Ferruginous Sand Formation of the United 



States;" by S.G.Morton, M.D. - - - 128 



XII. Abstract of Meteorological Observations, taken at Ma- 



rietta, Ohio, with notices of Floods, Fruits, and flights 

 of pigeons ; by S. P. Hildreth, in the year 1832. Lat. 

 39° 25' North, Long. 4° 28' West of Washington City, 132 



XIII. M. Hachette on the Chemical Action and Decomposi- 



tion of Water, produced by Electrical Induction. From 

 the Ann. de Chim. et de Phys. Sept., 1832; translated 

 by O. P. Hubbard, Ass't in the Chem. Depart, in Y. C, 142 



Jp/^1 



