282 PROCEEDINGS OF THE AMERICAN ACADEMY 



Royal Netherlands Institute, 



Verhanderlingen der Erste Klasse van het Kon. Nederlandshe 

 Institut van Wettenschappen, &c., te Amsterdam. 3^ Reeks, P- 

 3' Deel. 4to. Amsterdam, 1848 - 50. 



Jaarboek. Voor 1850. 8vo. Amsterdam. 



Tijdschrift voor de Wis-en Natuurkundige Wetenschappen. 1% 2% 

 und 3^ Deel. 8vo. Amsterdam, 1848 - 49. 

 Royal Society of Sciences, Upsal. 



Nova Acta Regia Societatis Scientiarum Upsaliensis. Vols. XI. 

 - XIV. Part I. 4to. Upsal, 1839 - 48. 

 Royal Society of Northern Antiquaries. 



Memoires. 1840- 43, 1844, and 1845-47. 3 vols. 8vo. Co- 

 penhagen, 1844-47. 



Guide to Northern Archaeology. 8vo. London, 1848. 



List of the Society, January, 1845, and January, 1850. 



General Anniversary Meeting, February 15th, 1851. 

 Royal Danish Academy. 



Oversight over det Kgl. Danske Videnskabernes Selskabs For- 

 handlinger. 1847-48. 8vo. 2 vols. Kjobenhavn. 



Skrifter. 5^ Rcekke. Natur. og Math. Afdeling. P Bind. 4to. 

 Kjobenhavn, 1849. 

 The Russian Government. 



Recueil d'Observations Meteorologiques et Magnetiques faites dans 

 r£tendue de I'Empire de Russie. 1846, Parts I. et II. 4to. St. 

 Petersbourg, 1849. 



Annates de I'Observatoire Physique Central de Russie, 1847, Parts 

 I., II., et 1848, III. Part. 4to. St. Petersbourg, 1850 - 51. 



Three hundred and fifty-third meeting. 



December 2, 185L — Monthly Meeting. 



The President in the chiar. 



Professor Peirce communicated a mathematical paper, en- 

 titled " A Case in the Theory of Probabilities." 



Mr. Desor made some remarks upon the origin of the con- 

 torted strata of sand and clay in the diluvial deposits, which 

 had recently been the subject of some discussion in the Geo- 

 logical Society of London. Instances of similar strata occur 

 frequently in the neighborhood of Boston, and throughout New 



