The essential results were that Kemmler’s execution took nearly eight minutes, because the electrical voltage was lower and less consistent than plans called for. After an inital jolt of power, Kemmler was still alive. So the switch was thrown a second time.
The following stream of articles provide plenty of detail, especially considering only 24 hours had elapsed since the execution.
In addition to details of the gristly proceedings, the package includes the details and results of Kemmler’s autopsy, finger pointing about what went wrong and who was responsible.
They conclude with comments from Thomas Edison about what went wrong and from George Westinghouse, who said, “They could have done better with an axe.”