28 NOTES ON THE TWO ELECTRICITIES. 



NOTES ON THE TWO ELECTRICITIES. 



S3. Is heat a binary compound? And are its 

 elements the two electricities ? 



34. When the two electricities combine, what is 

 the product ? Is it not heat ? 



35. If heat is a binary compound, of which 

 the elements are the two electricities, is it by the 

 decomposition of heat that ordinary electricity is 

 evolved ? 



36. If ordinary electricity is evolved by the de- 

 composition of heat, what is the process by which 

 the common electrical machine is made to give off 

 electricity? Is the heat which is excited by the 

 friction of the rubber upon the glass cylinder decom- 

 posed, the heat being interposed between two bodies, 

 of which one has an affinity for positive and the 

 other for negative electricity ; the glass of the 

 cylinder being the one that attracts and carries off 

 the positive electricity, and the silk of the rubber 

 the other that attracts and gives off the negative 

 electricity ? 



37. It is the opinion of some of our lecturers on 

 chemistry, that the electricity manifested by the 



