482 Mr. F, Siemens on Dissociation Temperatures, &c. [May 7, 



since been inaugurated. There seems to be a general feeling tbat 

 something will before long have to be used instead of the present 

 fireplace with its smoky chimney, especially now that people are 

 massed together in enormous cities in which cleanliness and pure air 

 are of the greatest importance. Under these circumstances I would 

 venture to draw the attention of authorities in sanitary science to the 

 method of warming dwellings to which I have shortly referred, as 

 resting on a scientific basis, being cleanly and easy of application, 

 demanding little or no attention, and fulfilling all sanitary and 

 economical requirements, and finally as being entirely free from all 

 dissociating influences owing to the free development of the flame. 



[F. S.] 



