But Western ideas are beginning to have their effect even in the Orient, and teachings which were once given only to the few are now freely offered to any who are ready to receive them.

The East and the West are growing closer together, and both are profiting by the close contact, each influencing the other.
The Hindu Yogis have always paid great attention to the Science of Breath, for reasons which will be apparent to the student who reads this book.

Many Western writers have touched upon this phase of the Yogi teachings, but we believe that it has been reserved for the writer of this work to give to the Western student, in concise form and simple language, the underlying principles of the Yogi Science of Breath, together with many of the favorite Yogi breathing exercises and methods.

We have given the Western idea as well as the Oriental, showing how one dovetails into the other.

We have used the ordinary English terms, almost entirely, avoiding the Sanscrit terms, so confusing to the average Western reader.
The first part of the book is devoted to the physical phase of the Science of Breath; then the psychic and mental sides are considered, and finally the spiritual side is touched upon.
We may be pardoned if we express ourselves as pleased with our success in condensing so much Yogi lore into so few pages, and by the use of words and terms which may be understood by anyone.