* Different sources provide different numbers: Some sources might list the number of translations based on historical data, while others might include more recent translations.
* The definition of "translation" can vary: Does it include full translations, excerpts, or adaptations?
* Some languages might have multiple translations: There might be different editions or interpretations of the book translated into the same language.
However, we can say with confidence that *On the Origin of Species* has been translated into hundreds of languages, making it one of the most widely translated scientific works in history. It's a testament to the book's enduring impact and its importance in shaping our understanding of the natural world.