195: Henphry Davy

Explanation
In the original strip, Henry was reading a biography on the well-known Thomas Alva Edison. In this edit, the book is about a much more obscure figure in the history of electric lighting: Humphry Davy. His contribution was the invention of the Davy lamp, and an early version of the incandescent light bulb.

The author writes:
Original Henry strip: 1987-01-28.

Transcript
Boy: Remember, the teacher wants us... Boy: ...to do some light reading! {Henry runs... to a bookshelf, and pulls down a book called "The Life of Humphry Davy".}