In “On the Preparations of the Indian Hemp, or Gunjah (Cannabis Indica)," W. B. O'Shaughnessy presents a comprehensive examination of the medicinal properties and cultural significance of cannabis in the 19th century. Written in a clear, methodical style, the text transcends mere pharmacological analysis, weaving historical anecdotes and ethnobotanical insights into a broader discourse surrounding the plant's myriad uses. Positioned within the larger context of colonial Indian studies, O'Shaughnessy's work emerges as a pioneering exploration of cannabis that lays the groundwork for contemporary discussions on its therapeutic potential and social implications. W. B. O'Shaughnessy, an Irish physician and pioneering researcher in the field of medical cannabis, drew from his extensive experiences in India, where he first encountered the diverse applications of hemp. His keen interest in the intersection of medicine and indigenous practices informed his scholarly pursuits, ultimately leading to this seminal text. O'Shaughnessy'Äôs unique perspective as an outsider observing the local cultural practices under colonial rule offers invaluable insights into the historical context of cannabis use. This book is essential for readers interested in the historical roots of cannabis as a therapeutic agent, as well as the broader implications of its place in society. O'Shaughnessy'Äôs meticulous approach offers a rich scholarly foundation for understanding the complexities surrounding cannabis, making it a worthwhile read for both historians and medical professionals alike.