A Letter on Suspended Animation / containing experiments shewing that it may be safely employed during operations on animals

The author reports experiments inducing temporary suspended animation in animals using carbonic acid and other chemical agents to test whether surgical interventions can be performed without pain or lasting harm. Procedures such as partial amputations and deep incisions were carried out while subjects were insensible; bleeding was often reduced, immediate signs of distress were absent, and wounds commonly healed more quickly and with less inflammation than equivalent operations done after recovery. Some techniques yielded less favorable outcomes, with occasional inflammation or delayed healing. The author concludes that suspended animation shows promise for reducing surgical pain and advocates further medical investigation.