78 



P'openles of 

 s^diiini heat. 



Prize subject, 



Medlca! aad 



chirurgical 



lectures. 



SCIENTIFIC NEWI. 



SCIENTIFIC NEWS. 



R. Delaioche informs us, that he has made some curi- 

 ous experiments on radiant heat, which he intended to 

 lay before the Institute. He ascertained, that the heat 

 entitled by radiation is not proportional to the excess of the 

 temperature of the radiating body above the circumambient 

 medium, but that it increases in a much more rapid ratio. 

 Thus, taking the quantity of heat emitted with an excess 

 of 87° to be 1% the quantity emitted with an excess of yoo" 

 will be at least 70°. He also found, that the quantity of 

 unlurainous calorific rays that traverse t^lass is much greater 

 ,ir> proportion to the total quantity of rays emitted, when the 

 body that emits them is very hot, than when it is less so; 

 and that the nature of the unluminoas calorific rays is not 

 identical, but varies according to the temperature of the 

 source that emits them. 



At the request of Mr. Berthollet, the French InstituU 

 has proposed for the subject of a prize a determination of 



the specific heat of gasses. 



St. Thomas's avd Guy's Hospitals, i 



The Winter Courses of Lectures at these adjoining Hos- 

 pitals will commence the first week of October; viz. 



At St. Thomas's* 



Anatomy, and the Operations of Surgery, by Mr. Clitie, 

 and Mr. Astley Cooper. { 



^Principles and Practice of Surgery, by Mr. Astley , 

 Cooper. 



At Guy's. 



Practice of Medicine, by Dr. Babington and Dr. Curry. 



Chemistry, by Dr. Babington, Dr. Marcet, and Mr. 

 Allen. 



Experimental Philosophy, by Mr. Allen. 



Theory of Medicine, and Materia Medica, by Dr. Curry 

 and Dr. Cholmeley. 



Midwifery, and Diseases of Women and Children, by 

 Dr. Haighton. 



.Physiology, or Laws of the Animal CEconomy, by Dr. 

 Haighton. Structure 



