Introduction and definition of terms--Defined substances, defined surfaces and their preparation--Methods of studying the texture of adsorbents--Methods of studying adsorption--Special methods of studying adsorption--Surface structure of solids--Theory of adsorption forces--Adsorption kinetics--Thermodynamics of adsorption--Theory of adsorption equilibria--The mechanism of physical adsorption--The mechanism of chemisorption--Adsorption from flowing gases and liquids--Practical applications of adsorption--Adsorption from solutions--The relationship between adsorption and catalysis