10 



Experimental Illustrations of the radiating and absorbing 

 Powers of Sut faces for Heat, &c. 



Replies to a Circidar in relation to the Occurrence of an 

 unusual Meteoric Display on the loth of November, 1834. 



Notice of Experiments on Electricity developed by Mag- 

 netism. 



Experiments on the Efficacy of Perkins's Steam Boilers, 

 or Circulators. 



On the alleged Influence of Colour on the Radiation of 

 non-luminous Heat. 



Safety Apparatus for Steam Boilers. 



Observations on the Disturbance in the Direction of the 

 horizontal Needle during the Aurora of July 10th, 1833. 



Report of Experiments on the Navigation of the Chesa- 

 peake and Delaware Canal by Steam. 



