The book investigates the nature of implication and linear inference within philosophical thought. Bernard Bosanquet, a prominent philosopher, delves into the logical structures that underpin reasoning. This work, originally published in 1920, examines how one proposition leads to another and the principles governing sequential deductions. The text is a product of early 20th-century philosophical discourse on logic and epistemology.

This work is a significant contribution to the study of logic and epistemology from the early 20th century. Its focus on implication and linear inference places it within a tradition of rigorous philosophical analysis. The book's re-publication through modern scanning technologies makes its detailed arguments accessible to contemporary scholars. The text is likely to be of interest to those studying the history of logic and the development of philosophical reasoning.