276 M. Seguin on the Efflcts of Heat and Motion. 



Art. XIII. — On the Effects of Heat and Motion. In a Let- 

 ter to Dr Bkewsteii from M. Seguin, aine. 



Sir, 

 I beg leave to thank you for having inserted in your interest- 

 ins: Journal the letters which I had the honour of addressing 

 to Mr Herschel, respecting the new views, which I considered 

 as affording a more simple explanation of several physical 

 facts than that which is derived from received theories. 



I originally presented these views in reference to their con- 

 nection with astronomy, hecause I conceived that a solution of 

 the difficulties might he obtained from a profound study of 

 the laws of gravitation discovered by Newton, and by giving 



