First published in 1939, Analysis of Handwriting by H. J. Jacoby is a foundational exploration of graphology, the study of handwriting as a window into personality and psychology. Divided into three comprehensive parts, the book begins with the theoretical underpinnings of graphology, addressing its historical development, uniqueness of handwriting, interpretative frameworks, and limitations. The second part delves into the psychological significance of specific handwriting traits, such as letter size, spacing, pressure, and signature styles, offering a detailed analysis of how these elements reflect individual characteristics. The final section focuses on practical applications, showcasing how graphology can be used in diverse fields like vocational guidance, psychotherapy, criminology, and even historical research. With its meticulous structure and scientific approach, Jacoby's work remains a seminal text for anyone interested in the intersection of psychology and handwriting.