ILLUSTRATIONS 



TEXT FIGURES 



Fig. 1. Curve 1. Dioxydiethylterephthalate in alcohol. 



Curve 2. Dioxydiethylterephtalate in alcohol, plus 2 equivalents of 



sodium alcoholate. 

 Curve S. Diacetyl of dioxydiethylterephthalate in alcohol. 



2. Curve 1. Diamidodiethylterephthalate in alcohol. 



Curve 2. Diamidodiethylterephthalate in alcohol plus 2 equivalents 

 of hydrochloric acid. 



3. Curve 1. Diethylterephthalate in alcohol. 

 Curve 2. Diethyldihydroterephthalate in alcohol. 



4. Curve 1. P-hydroxyquinone in alcohol. 



Curve 2. Potassium salt of p-hydroxyquinone in 80 per cent 



alcohol. 

 Curve S. Chloranil in glacial acetic acid. 

 Curve U- P-dichlordiethoxyquinone in alcohol. 

 Curve 5. Diketohexamethylene in alcohol. 



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