CONTENTS f VOLUME XL. 



NUMBER I. 



Art. I. Notices of European Herbaria, particularly those most in- 

 teresting to the North American Botanist, ... 1 

 IL Fragments of Natural History ; by Prof J. P. Kirtland, 



M. D., 19 



HI. Description of a Halo or Corona of great splendor, observ- 

 ed at Greensburgh, Westmoreland County, Pa ; by Al- 

 fred T. King, M. D., 25 



IV. Extracts from the Proceedings of the American Philosoph- 

 ical Society, ........ 27 



V. Additional Remarks on the Tails of Comets; by William 



Mitchell, ........ 59 



VT. Notice of a Locality of Zeolites, &c., at Bergen, Bergen 



County, New Jersey ; by Wm. Gland Bourne, . .69 

 Vn. Noticeof the Geological Survey of the State of New York, 

 presented to the Legislature, Jan. 24, 1840; by Prof Ol- 

 iver P. Hubbard, M. D., ...... 73 



VHL On the Magnetic Dip in the United States ; by Prof Elias 



LooMis, ......... 85 



IX. Description of some new species of Fossil Shells, from the 



Eocene, at Claiborne, Alabama; by Henry C. Lea, 92 



X, A Description of several New Electro-Magnetic and Mag- 

 neto-Electric Instruments and Experijnents ; by Joseph 

 Hale Abbot, 104 



XI. Development of some interesting Properties of Numbers; 



by George R. Perkins, ...... 112 



XII. Remarks on the Geological Features of the Island of Owy- 

 hee or Hawaii, the largest of the group called the Sand- 

 wich Islands, with an account of the condition of the 

 Volcano of Kirauea, situated in the southern part of the 

 Island near the foot of Mouna Roa; by Edward G. Kel- 



LEY 117 



XIII. The employment of Iodine as a reagent for Hydrosulphu- 



ric Acid ; by M. Alphonse du Pasquier, . . . 123 



