PREFACE 



THE following work on Chemical Statics reproduces the 

 lectures given by me in the winter and summer semesters, 

 1897-98, at the University of Berlin, under the title 

 1 Selected Chapters in Physical Chemistry/ It is a second 

 part to the ' Chemical Dynamics,' but at the same time is 

 as far independent as possible, and deals with the methods 

 which yield conclusions as to molecular magnitude, struc- 

 ture, and grouping, and consequently bring into life our 

 present conceptions on the structure of matter. The theory 

 of solutions and stereochemistry are treated especially fully, 

 in accordance with the present interest attaching to them. 

 That Part I of the ' Lectures on Theoretical and Physical 

 Chemistry ' has already been translated into French and 

 English may perhaps be regarded as a recommendation 

 of the present Second Part. 



J. H. VAN 'T HOFF. 



CHARLOTTENBURG, 

 March, 1899. 



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