Charles Berlitz is the grandson of the founder of the world famous Berlitz schools of language, and he himself grew up speaking many languages at an early age. He is also the author of such enlightening works as "The Philadelphia Experiment" and "The Bermuda Triangle." Given that strange combination, you would expect that "Native Tongues" would be not your typical work on linguistics, and indeed this is the case.
"Native Tongues" is really a "Ripley's Believe it or Not" about languages. In its various chapters it contains short paragraphs about odd facts regarding languages and language development. This is not at all an academic work. There are not notes or works cited. Everything that Berlitz writes about the language facts that he discusses must simply be taken as given based on the authority of Berlitz himself. And this is problematic. This reviewer is certainly not an expert on language, but I found at least two things that Berlitz said in this work that are probably not true. These facts had to do with the origins of expressions, and of course the origins of expressions are not well documented and therefore are hard to prove. So perhaps it is enough to accept Berlitz' strange explanations rather than try to challenge them with knowledge outside of this book.
Being the author of books on the occult, Berlitz could not help himself in including the same kind of strangeness that inspired his "Bermuda Triangle" and other works. He includes sections on lost civilizations, UFOs and aliens. For those who really are not looking for an insight into the bizarre, these sections are simply silly. Another fault that I found with this book is that it is highly Eurocentric. Certainly Berlitz touches on Asian, African and Native American languages, and the reader who knows nothing about these languages would learn something here. But his treatment of them is miniscule. He spends far more time discussing the European languages, and he spends an enormous amount of time discussing the development of the English language. Perhaps this is to be expected considering that he is writing this book for an English speaking audience.
This is most certainly not the greatest work on languages out there, but for someone who does not have a sophisticated view of linguistics, this work will be entertaining and interesting and worth a read.