;Contents: The effect of industrial gases and industrial smoke on various forest species; The influence of smoke and gas on the flowering and fruiting of some trees and shrubs; The effect of specific industrial gases on the growth of some tree species; Reaction of trees and shrubbery to air pollution in the forest-park belt of Moscow and measures for extending the lifespan of plants; Current conditions and scientific problems in studying the injurious effects of industrial pollutants on plants and in developing methods for controlling them in the Urals; The drainage of temporarily swamped soils in relation to pine plantings growing under conditions of industrial air pollution; The effect of industrial smokes and gases upon coniferous forests growing under conditions of increased humidity in the Moscow region (Podmoskov'E); Some peculiarities of the susceptibility of scotch pine sprouts to sulfur dioxide injury; Gas resistance of pine and birch; The effect of sulfur dioxide on woody plants under the environmental conditions prevailing in the Sverdlovsk region; Characteristics of photosynthesis and of some other processes in connection with smoke and gas resistance of trees and shrubs; Indicators of gas resistance of arboreal plants; The activity of certain enzymes and gas resistance of woody plants; Variation in the oxidizability of the cell content as one of the indicators of gas resistance in plants; and Effect of sulfur dioxide on the enzymatic activity of tree leaves.