104606 



CONTENTS OF VOLUME XXIV. 



NUMBER I. 



Page. 



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



1 



Engineer, 



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



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



HI. 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. - -._.-__ 



V. Observations on the Saliferous Rock Formation, in the 



40 



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, - 

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



70 



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, 



73 



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;' 5 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. Haohette 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 



