CONTENTS OF VOLUME XLIV 



NUMBER I. 



Page. 



Art. I. Geological and Miscellaneous Notice of the Province of 



Tarapaca; by John H. Blake — with a map, - - 1 

 II. A New and Simple Method to find the Perpendicular 

 Height of Mountains, Headlands, &c. above any given 

 datum, from Barometrical and Thermometrical Observa- 

 tions; by Prof. Oliver Byrne, ----- 12 



III. Description of Ancient Remains, Animal Mounds, and 



Embankments, principally in the counties of Grant, Iowa, 

 and R-ichland, in Wisconsin Territory ; by S. Taylor — 

 with four plates, -------21 



IV. Remarks and Observations on the Formation of Fogs; by 



Prof. W. M. Carpenter, M. D, 40 



V. Abstract of a Meteorological Register, kept at Jackson, 

 (Louisiana,) during three years ending Jan. 1, 1842; by 

 W. M. Carpenter, M. D., 49 



VI. Some remarks on the methods in common use of obtaining 



the Mean Temperature of Places, and on the supposed 



difference between the Temperature of the Air and that 



of the Earth ; by Prof. "W. M. Carpenter, 50 



VII. Notices of some Trappean Minerals found in New Jersey 



and New York ; by Prof. Lewis C. Beck, 54 



VIII. A short notice of the Action of Potash upon Cholesterine ; 



by J. Lawrence Smith, M. D., ... 60 



IX. A Review of the Researches upon the Dilatation of Gases, 



by M. V. Regnault ; by J. Lawrence Smith, M. D., - 63 

 X. Description of the Bones of a New Fossil Animal of the 

 Order Edentata ; by R. Harlan, M. D., F. L. S., &c. — 

 with three plates, ------- 69 



XI. An Account of some new and rare Plants of North Caro- 

 lina; by M. A. Curtis, 80 



XII. Selections from the Scientific Correspondence of Cadwal- 

 lader Colden with Gronovius, Linnaeus, Collinson, and 

 other Naturalists; arranged by Asa Gray, M. D., - 85 



