

PftgO 



T, 

 I 

 II 



III 



EllTtATA. 



line 34, for ebnllntion rend ebullition. 

 40, for ricp rend rue. 

 13, omit coitim;i sifter (lie word milk. 

 Ill, for I. ii Cliinie read La Chimie. 

 31 , for s< eels rend ie<-ds. 

 35, U r .ifflieiiteil read ■■ fflicted. 

 7, for divideded read divided. 



