As described in the book “Healing Codes for the Biological Apocalypse” by Dr. Leonard Horowitz, the Solfeggio frequencies were essentially rediscovered in the mid-1970’s by Dr. Joseph Puleo, a physician and one of America’s leading herbalists. Dr. Puleo claimed to have been intuitively guided to examine the Book of Numbers (4th book of the Hebrew Bible and 4th of five books of the Jewish Torah). In Chapter 7 of the Book, between Verses 12 and 83, Dr. Puleo used a Pythagorean method of reducing to the verse numbers and uncovered a pattern of six repeating codes. According to him, it revealed a series of six electromagnetic sound frequencies which corresponded to the six missing tones of the ancient Solfeggio scale: 396 Hz, 417 Hz, 528 Hz, 639 Hz, 741 Hz, 852 Hz.