XIV CONTENTS. 



LECTURE VII. 



PAGE 



Organic Chemistry at the commencement of its development 

 Attempts to determine the Elementary Constituents of Organic 

 Compounds Isomerism and Polymerism Views regarding 

 Constitution Radical Theory - - - 108 



LECTURE VIII. 



Further Development of the Radical Theory Views concerning 

 Alcohol and its Derivatives Phenomena of Substitution 

 Dumas' Rule The Nucleus Theory The Equivalent of 

 Nitrogen 130 



LECTURE IX. 



Graham's Investigation of Phosphoric Acid Liebig's Theory of 

 Polybasic Acids, and his Views with respect to Acids in general 

 Adoption of the Davy-Dulong Hypothesis Discovery of 

 Trichloracetic Acid Attack upon the Electro-Chemical Theory 

 Replies of Berzelius Copuke ' 150 



LECTURE X. 



Influence of the School of Gmelin Theory of Residues Coupled 

 Compounds Gerhardt's Determination of Equivalents Dis- 

 tinction of Atom, Molecule, and Equivalent by Laurent New 

 Characteristics of Polybasic Acids Molecules of the Elements - 173 



LECTURE XL 



Reasons for the Assumption of the Divisibility of Elementary Mole- 

 cules Fixing of the Molecular Weights, by Williamson, by 

 Means of Chemical Reactions Theory of the Formation of 

 Ether Fusion of the Radical Theory with Dumas' Types 

 Substituted Ammonias Polyatomic Radicals Gerhardt's 

 Theory of Types and System of Classification 197 



LECTURE XII. 



Mixed Types Relation between Kolbe's Views and the Copulae of 

 Berzelius Radicals containing Metals Conjugated Radicals 

 Kolbe and Frankland and the Views regarding Types Poly- 

 basicity as an Evidence for the Accuracy of the new Atomic 

 Weights Discovery of the Polyatomic Alcohols and Ammonias 220 



