1804 in science (English Wikipedia)

Hyodo, M. (1992). "Doctor S. Hanaoka, the world's-first success in providing general anesthesia". In Hyodo, M.; Oyama, T.; Swerdlow, M. (eds.). The Pain Clinic IV: proceedings of the fourth international symposium. Utrecht: VSP. pp. 3–12. ISBN 90-6764-147-2. Retrieved 2010-09-13.
Richardson, Benjamin Ward (1886). "Antonio Scarpa, F.R.S., and Surgical Anatomy". The Asclepiad. 4 (16). London: Longmans, Green and Co.: 128–157. Retrieved 2008-06-10.

britannica.com

"Copley Medal | British scientific award". Encyclopedia Britannica. Retrieved 21 July 2020.

Izuo, M. (2004). "Medical history: Seishū Hanaoka and his success in breast cancer surgery under general anesthesia two hundred years ago". Breast Cancer. 11 (4): 319–24. doi:10.1007/BF02968037. PMID 15604985. S2CID 43428862.
Jacyna, L. S. (2004). "Bell, Sir Charles (1774–1842)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/1999. Retrieved 2011-04-06. (Subscription or UK public library membership required.)
Bevan, Michael (2004). "Parkinson, James (1755–1824)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/21371. Retrieved 2010-04-11. (Subscription or UK public library membership required.)

Izuo, M. (2004). "Medical history: Seishū Hanaoka and his success in breast cancer surgery under general anesthesia two hundred years ago". Breast Cancer. 11 (4): 319–24. doi:10.1007/BF02968037. PMID 15604985. S2CID 43428862.
Matsuki, A. (2000). "New studies on the history of anesthesiology – a new study on Seishū Hanaoka's "Nyugan chiken roku" (a surgical experience with breast cancer)". Masui: The Japanese Journal of Anesthesiology. 49 (9): 1038–43. ISSN 0021-4892. PMID 11025965. Archived from the original on 2016-04-23. Retrieved 2010-09-13.

"The Burr Truss". Truss Styles of Covered Bridges. New York State Covered Bridge Society. January 2006. Archived from the original on 2006-09-08. Retrieved 2011-12-13.

Meyer, Klaus (2004). "Dem Morphin auf der Spur". Pharmazeutischen Zeitung (in German). GOVI-Verlag. Retrieved 2012-06-12.

"Programming patterns: the story of the Jacquard loom". Science + Industry Museum. 2019-06-15. Retrieved 2024-11-01.

Izuo, M. (2004). "Medical history: Seishū Hanaoka and his success in breast cancer surgery under general anesthesia two hundred years ago". Breast Cancer. 11 (4): 319–24. doi:10.1007/BF02968037. PMID 15604985. S2CID 43428862.

Matsuki, A. (2000). "New studies on the history of anesthesiology – a new study on Seishū Hanaoka's "Nyugan chiken roku" (a surgical experience with breast cancer)". Masui: The Japanese Journal of Anesthesiology. 49 (9): 1038–43. ISSN 0021-4892. PMID 11025965. Archived from the original on 2016-04-23. Retrieved 2010-09-13.
"The Burr Truss". Truss Styles of Covered Bridges. New York State Covered Bridge Society. January 2006. Archived from the original on 2006-09-08. Retrieved 2011-12-13.

Cox, Joseph Mason (1806). Practical Observations on Insanity (2nd ed.). London: Baldwin. Retrieved 2023-07-30 – via Wellcome Collection..