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CONTENTS OF VOLUME XII. 



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NUMBER XXXIV. 



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Art. I. On Certain Meteorological Coincidences ; by J. H. 



Page. 



Alexander, Esq., 



II. On a Method for distinguishing between Biaxial and Uniaxial 



Crystals when in thin plates, — and the results of the exam- 

 ination of several supposed Uniaxial Micas ; by W. P. Blake, 



III. On some of the Thermal Waters of Asia Minor ; by Dr. 

 J. Lawrence Smith, - - 



IV. Uses of the StilHngia sebifera or Tallow Tree, with a no- 

 tice of the Pe-la, an Insect-wax of China ; by D. J. Mac- 



GOWAN, M.D., - - 



V. On the sudden disappearance of the Ice on Lake Champlain, 



at the breaking up of Winter ; by Rev. Zadock Thompson, 



VI. On Coral Reefs and Islands ; by James D. Dana, 



VII. A description of a new Sand-Bath with Water-Bath and Dis- 

 tilling Apparatus attached, erected in the Yale Analytical 

 Laboratory ; by Prof, John P. Norton, - • - . 



VIII. On Microscopes and Microscopy ; by W. I. Burnett, 



IX. On the Connection of Chemical Forces with the Polarization 

 of Light ; by Nevil Story Maskeltne, Esq., M,A., 



X. On Atmospheric Magnetism ; by Prof. Faraday, 



XI. On Eupyrchroite of Crown Point, New York ; by Charles 

 T. Jackson, M.D., 



XII. On the Recent Condition of Kilauea ; by Rev. C. S. Lyman, 

 including a letter from Rev. T. Coan, . • • ^* 



XIIL On the causes of the disengagement of Electricity in Plants, 

 and upon Vegeto-terrestrial Currents; by M. Becquerel, - 



XIV. On the Rings of Saturn ; by G. P. Bond, 



XV. On the Constitution of Saturn's Ring; by Prof. B. Peiece, 



XVI. On Saturn's Ring; by Daniel Kirkwood, A.M., - 



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6 



10 



17 



22 

 25 



52 

 56 



64 



69 



73 



75 



83 

 97 



106 

 109 



