The present book is sequel to the author’s Qualitative Analysis and Course of Qualitative Chemical Semimicroanalysis. Therefore it does not deal with many theoretical questions, which are fully discussed in these books, at equal length in a course of quantitative analysis. In all such instances merely a brief mention is made of the relevant principles and results, with a reference to the appropriatesections in the textbooks of qualitative analysis.Exceptions are made in discussion of the theoretical principlesof activity, the salt effect (§ 20) and oxidation potentials (§ 78). These subjects are the most difficult for students and, moreover, they are often considered only in courses of quantitative analysis.The author’s aim was to correlate theory with the practice of anal­ ysis and, as in the textbooks of qualitative analysis, to make the theory easily understood by students.The question of physico-chemical methods of analysis and their place in a course of quantitative analysis is a very serious problem. Only two such methods are considered in detail in the book: color­ imetry (visual) and electrogravimetric analysis. Conductometry, potentiometry, polarography, and photocolorimetry are considered only in outline, without descriptions of the methods or examples of determinations.