The book "The Works of Francis Maitland Balfour, Volume 4 (of 4): Drawings" by Francis M. Balfour is the fourth volume of the collection of works of the eminent British biologist and morphologist. This book presents important scientific discoveries and additions to Balfour's previous materials. The work includes numerous drawings that help the reader better understand the subject of the author's research. Each of the pictures is supplemented with explanatory captions and comments, which makes the book accessible to a wide range of readers who are interested in natural sciences. Due to its scientific importance and detailed exposition, the works of Francis Maitland Balfour always remain relevant for natural science researchers and specialists in the field of biology.