Provincial Medical Journal and Retrospect of the Medical Sciences
Published February 4, 1843
«The resinous extract is prepared by boiling the rich, adhesive tops of the dried gunjah in spirit (sp. gr. 835), until all the resin is dissolved. The tincture thus obtained is evaporated to dryness by distillation, or in a vessel placed over a pot of boiling water. The extract softens at a gentle heat, and can be made into pills without any addition.
[…] with the alcoholic extract made from the tops in the way I recommend, the practitioner has only to feel his way, and increase the dose till he produces intoxication as the test of the remedy having taken effect.”
«O’Shaughnessy joined the British East India Company in 1833 and moved to Calcutta, remaining in India for approximately nine years where he fulfilled the roles of surgeon, physician, professor of chemistry at Medical College and Hospital, Kolkata, and scientist….
In 1856 he was knighted by Queen Victoria for his work on the telegraph in India. He was also appointed Director-General of Telegraphs at this time. During the following years O’Shaughnessy wrote on telegraphy-related subjects, including a book of Private Codes for encrypted telegraphy. In 1860, O’Shaughnessy returned to Europe for sick leave where he remained in obscurity until his death in January, 1889…
He adopted the surname Brooke on the death of a relative…
On the Preparations of the Indian Hemp, or Gunjah (Cannabis Indica)—Their Effects on the Animal System in Health and their Utility in the Treatment of Tetanus and other Convulsive Diseases [Rheumatism, Hydrophobia, Cholera, Infantile Convulsions]—by W. B. O’Shaughnessy» —Rafael Andrés Escribano
U.S. National Library of Medicine —http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2490264/?page=1