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PROLOGUE Not like any other story you ever read before is Tarzan of the Apes. "While you are reading it you would like to pause to ask yourself  "Is it possible?" but you can't, because the story is so fascinating that pausing is impossible. It's a yarn of the you-can't-stop-until-you-finish-it kind. It may have happened in the wilds of Africa just as the author relates it, or it may not -- we do not know whether or not he had a basis of fact for his story -- but you are not a scientist while you are reading it

 You are just an ordinary human being, with a love for a story that is absorbing in its interest and swiftness.

CHAPTER I: In the Wilds

"I had this story from one who had no business to tell it to me or to any other. I may credit the seductive influence of an old vintage upon the narrator for the beginniug of it and my own skeptical incredulity during the days that followed for the balance of the strange tale. . . . "

.
. . . "If it's any of my business how did you ever get into that jungle?"

"I don't know," said Tarzan quietly "I was born there. 
My mother was an ape, and, of course, she couldn't tell me anything about it.
I never knew who my father was.

The End

Another particularly interesting example of this revised version is shown at:
www.tarzan.org/pdf/19131216.pdf
There is a tiger breaking into the cabin through the window (in the text and in the illustration), not a lion as it was later corrected in the book version.