The book "The Development of the Mind in Children, Part II: The Development of Intelligence" is an important study in the field of child psychology and pedagogy. The author William Preyer carefully analyzes the development of intelligence in children and reveals the patterns of its formation. The book explores the processes of thinking, observation and understanding in children based on scientific data and observations. The publication is part of the International Education Series, edited by noted educator and philosopher William T. Harris. The book contains a huge amount of materials that contribute to understanding the mental development of children in the context of education and pedagogy. This book is an important resource for anyone interested in childhood psychology and the development of intelligence in young individuals. It helps to better understand the processes of the child's internal development and participate in the formation of a positive and harmonious personality.