C O N T ]•: N T S . 



AKTICLE \l. ().\ THE Winds of the Nou'inEUN Hemisphere. By James II. Coffin, Professor of 

 Mathematics and Natural Philosophy, iu Lafayette College, Eastou, Pennsylvania. 

 Pp. 200, and 13 plato.'^. 

 Introduction ........ 5 



Series A. List of Stations 



Series B. Alwtract of Observations 



Series C. Moan Direction of Winds 



Series D. Monthly Directions and Deflections 



Series E. Force and Velocity of Winds 



Series F. Eflfects of Force and Velocity 

 Appendix .... 



List of Plates .... 



12 



26 

 110 

 142 

 173 

 183 

 187 

 198 



AllTICLE VII. The Ancient Fauna of Nebraska, or a Description of IIemains of Extinct 

 Mammalia and Chelonia, from the Mauvaises Terres of Nebraska. By 

 Joseph Leidy, M. D., Professor of Anatomy in the University of Pennsylvania. Pp. 

 124, and twenty-five plates. 



Preface .......... 5 



Introduction ......... 7 



Mamjialia. 



Chapter I. Descriptions of Ungulata Paridigitata . . . .19 



Chapter II. Descriptions of Ungulata Uuiparidigitata . . .67 



Chapter III. Descriptions of Carnivora . . . . .95 



Chelonia. 



Chapter I. Testudo ....... 101 



Synopsis of Genera and Species of Extinct Mammalia and Chelonia, described 



in this work ........ 113 



. Index 117 



Explanation of the Plates ....... 119 



APPENDIX. 



Occultations of Planets and Stars by the Moon, during the year 1853. Com- 

 puted BY John Downes, at the expense of the fund appropriated by Congress for the 

 establishment of a Nautical Almanac, and published by the Smithsonian Institution. 

 Pp. 36. 



