159 



Safety Apparatus for Steam Boilers. By A. D. Bache, Professor 



of Natural Philosophy and Chemistry, University of Penn- 

 sylvania. 

 Historical Notes. By A. D. Bache, Fsq. &c. 

 Experimental Illustrations of the Radiating and Absorbing Powers 



of Surfaces for Heat, &c. By A. D. Bache, E^q. 

 Experiments on the alleged Influence of Colour on Radiation. 



By A. D. Bache, Esq. 

 Replies to a Circular in relation to the occurrence of an unusual 



Meteoric Display on the 13th November 1834, addressed by 



the Secretary of War to the Military Posts of the United 



States. By A. D. Bache, Esq. 

 Notes and Diagrams illustrative of the New Brunswick Tornado. 



By A. D. Bache, Esq. 

 On the Magnetic Dip at various places in the United States. By 



A. D. Bache, Esq. 

 On the relative Horizontal Intensities of Terrestrial Magnetism at 



several places in the United States. By A.' D. Bache, Esq. 



Bi/ the Author. 

 Report on the Geological Survey of the State of New Jersey. By 



Henry D. Rogers, Professor of Geology and Mineralogy, &c. 



— B}/ the Author. 

 Report of the Managers of the Franklin Institute of the State of 



Pennsylvania, for the promotion of Mechanic Arts in relation 



to Weights and Measures. 

 Report of the Committee of the Franklin Institute of Pennsylvania, 



on the Explosion of Steam-Boilers. 

 General Report on the Explosion of Steam-Boilers, by a Committee 



of the Franklin Institute of Pennsylvania. 



By the Franhlin Institution. 

 Report of the Geological Reconnaisance of the State of Virginia, 



made under the appointment of the Board of Public Works. 



By» William B. Rogers, Professor of Natural Philosophy. — 



By the Author. 



The following Communications were read : 



1. On the Condition of the Earth, as it is first described in 

 the Mosaic Account of the Creation. By Mungo 

 Ponton, Esq. 



In this paper, the author confined his attention principally to 



