The Glyphs, have been shown on the show, on posters, and on the Internet.Each glyph shows a natural element, generally with some unnatural change that is easy to miss at the first look. The symbols are also used, along with the dots, to make a code. The Glyphs appear before every commerical break (or act on the DVDs). The code usually makes a reference to some aspect of the overarching storyline or holds a clue to the next episode.
"Man is The Seed of Chaos" - Principia Discordia [3:14]
The Fringe Apple glyph has human embryos instead of seeds. Apples were given out as clues on the Fringe Scavenger Hunt. The apple is a symbol for discordia (chaos). So the symbolistic approach to this picture is that man is born in to chaos.
However, it may be a reference to Adam and Eve; the two children, and the apple from which they took the bites from.
The apple is a symbol of the pentagram/pentacle. Remember, it was also the cipher on the DaVinci Code.
The Fringe Butterfly has phalanges (all finger bones) for its wings. In the middle of the butterfly appears to be symbolism of Jesus Christ on the cross..
Classic reflection symbol; as above, so below - left-hand, right hand, etc. Also, the two sides of a molecule, such as left-handed meth and right-handed meth. The left is far more spiritual, whereas the right side of the molecule is more physical.
In the Fringe Flower glyph some of the petals are dragonfly wings. Like any daisy, the center has counter-rotating spirals, based on the Fibonacci sequence, and has left-right symmetry. However, THERE IS NO BEE. Just a Mandelbrot Set.
The Fringe Hand glyph has five fingers and one thumb.
The Hand appears to have a significant importance with the series as a whole as it is used in every single episode in the title clip.
Additionally, there seems to be a pixelation artifact that has appeared on the hand during the title sequence in at least the last five episodes of season one. The artifact appears in the part of the hand just below the "pinky" finger on the palm, and has an arc-like shape.
Anne Rice's Mayfair Witches series referred to a race with six fingers. It could be a parent race of ours, in all or part.
The Fringe Leaf glyph has a triangle, or Delta symbol on it. Leaves were given out as clues on the Fringe Scavenger Hunt. It appeared during the pilot episode when John Scott's body was taken into a Massive Dynamic lab.
Salvia leaf, which Walter uses regularly is a psychedelic drug. The equilateral triangle has been a symbol of deity; the inner being 'the god within'.
The Fringe Seahorse glyph has the Fibonacci spiral on its side, the spiral itself is contained inside a visual representation of the golden ratio. Its tail is also a Fibonacci spiral. Some images also include stick diagrams for the amino acids L-histidine and L-proline. The seahorse is featured in the season 2 episode "The Bishop Revival" in which it's revealed that Walter Bishop's father was nicknamed Seahorse, he signed his chemical with a sea horse. The number "6" is prominently featured within the center of the seahorse three times.. 666, the mark of the beast or the devil, has been hidden in the seahorse.
Yellow dots appear in many of the images containing glyphs, and on the various Fringe viral websites. They generally tend to float around, like fireflies, and can be associated as they appear in each episode to a specific dot on the Fringe Carousel which also appears to change with each commercial during the live broadcast. They suggest the likeness of Kirlian photographic artifacts, except that they are different in color from the glyph images. Many of the Fringe "Glyphs" or symbols are mirrored images of other Fringe Glyphs, with the exception of the positioning of these yellow dots.
The glyphs were deciphered by fans of the show without aid from the production team. As such, it took many episodes to develop the alphabet as new glyphs were being constantly introduced during the first season as different letters were used. The letters X and Z were never featured on the show, meaning the cipher was never truly completed until the release of September's Notebook, which featured an official Decoder Key.