Foreword by Brooke Hindle
Franklin's Scientific Style
How Practical Was Franklin's Science?
The Mysterious "Dr. Spence"
Collinson's Gift and the New German Experiments
The Kite, the Sentry Box, and the Lightning Rod
Father Divi and the First European Lightning Rod (with Robert Schofield)
Prejudice against the Introduction of Lightning Rods
Heat and Color
The Pennsylvania Hospital
The Transit of Mercury
Faraday and the "Newborn Baby"
Supplement: The Franklin Stove (Samuel J. Edgerton, Jr.)