SKCOND PART. 



CHAPTER FIRST. 



GENERAL REMARKS. 



The second part of this work is divided into 

 three chapters, subdivided into sections. 



Although my work is intended specially for 

 those who have not made special studies, I think it 

 my duty to include a few ideas on chemistry, 

 which I will endeavor to bring within the compre- 

 hension of all those who may read it. These expla- 

 nations are, at any rate, requisite for the necessary 

 understanding of this part of my work. 



1 ELEMENTARY IDEAS ON CHEMISTRY. 



Every thing that can be perceived by the senses 

 is called a body. Bodies are solid, liquid or gaseous. 



Atoms are infinitely small particles which have 

 altogether the identical properties of the body itself, 

 aod which together compose the body. 



Solid bodies are those whose molecules cannot be 



