Journal 3

3 is a cryptic journal, part of a series also containing 2, that contains information about the supernatural elements of Gravity Falls, Oregon, mainly creatures. Its author is unknown, and it is currently in the possession of Dipper Pines.

History
Prior to Dipper's and Mabel's arrival in Gravity Falls, as the journal's unknown author had been studying the mysteries of the town and recording his/her data in the book, the author felt that he/she was being watched and hid the book in the forest, in order to prevent an individual, possibly the same one watching him/her and/or the author's enemy, referred to as "He," from obtaining the book.

When Dipper goes into the woods to hang signs leading to the Mystery Shack, he comes across a metallic tree containing a strange machine. After playing around with the switches, he opens a hidden compartment in the ground and comes across the journal for the first time. Dipper flips through the pages for a brief while before Mabel greets him, and, after she inquires as to what he is reading, the two return to the Shack, where Dipper tells his sister about the journal. Later, Dipper consults the journal for clues about Mabel's new boyfriend, "Norman," whom he comes to suspect is a zombie. He tells Mabel about his suspicions, showing her the entry that convinced him in the process, though she does not believe him. Dipper checks the gnome page for possible weaknesses as he and Mabel battle the gnomes, and writes about his experiences on a blank page at the end of the episode.

Dipper reads about a cave behind a waterfall, into which he for himself and his friends to escape, as he, Mabel, and Soos flee from Old Man McGucket's Gobblewonker robot. In "Headhunters," Dipper flips through a few pages at the scene of Wax Stan's murder, and is seen reading it at the living room table after Mabel returns from her first date with 'Lil Gideon. Dipper shows the page on ghosts to Mabel in the gift shop in "The Inconveniencing," and later to Wendy Corduroy and her friends.

In "Irrational Treasure, the twins read about the town law stating it is legal to marry woodpeckers. In that same episode, after Pacifica Northwest teases Mabel, the two read about and decide to investigate the possibility of Nathaniel Northwest, alleged town founder and great-great grandfather of Pacifica, being a fraud, so they can put the popular girl in her place. Dipper reads about height altering crystals in "Little Dipper," wishing to use them to make himself taller, and checks on its position in his vest pocket as 'Lil Gideon interrogates him about how he came upon the crystals. In "Boss Mabel," Dipper uses the journal to help him catch a Gremloblin. In "Bottomless Pit!", Mabel, who reads it for the first time in the series, reads the journal about the truth teeth.

In Dreamscrapers, Dipper looks up about Billl Chiper.

Contents
Pages from 3 include the following:
 * Cursed Doors
 * Floating Eyeballs
 * Ghosts
 * Giant Vampire Bats
 * Gnomes
 * The Undead
 * The conspiracy about Nathaniel Northwest
 * Height Alteration (deeper part of the forest)
 * Legalization of marrying woodpeckers
 * Gremloblin
 * Truth telling teeth
 * Bill Cipher

Page 1
'''"June 18 It's hard to believe it's been six years since I began researching the strange and wondrous secrets of Gravity Falls, Oregon. In all my travels, never have I observed so many curious things! Gravity Falls is indeed a geographical oddity."

- Tourist Trapped '''

Gnomes
'''"Creature #24 Danger unknown. Little men of the Gravity Falls Forest. Weaknesses: _________? Pointy hats!"

- Tourist Trapped '''

Page 2
'''"Unfortunately, my suspicions have been confirmed, I'm being watched. I must hide this book before 'he' finds it. Remember, in Gravity Falls there is no one you can trust. Trust no one!"

- Tourist Trapped '''

The Undead
'''"Known for their pale skin and bad attitudes, these creatures are often mistaken for teenagers. Beware Gravity Falls' nefarious zombies."

- Tourist Trapped '''

Ghosts
"Always have a reason of some kind. Photographic Proof! Ectoplasm Sample (Gravity Falls town hall)"

- The Inconviencing

Floating Eyeballs
'''"Are they watching me?
 * Visible only at night
 * No retinal cord
 * "No response to contact"
 * "Spooky""

- Tourist Trapped '''

Giant Vampire Bats
'''"Giant Vampire Bats!! 10 feet, Desmodus Rotundus"

- Tourist Trapped '''

Unknown Page
'''"In Gravity Falls it used to be legal to marry woodpeckers."

- Irrational Treasure '''

Unknown Page
There is a cave behind the waterfall in Lake Gravity Falls.

The conspiracy around Nathaniel Northwest
'''"In my investigations I have recently made a discovery, Nathaniel Northwest may not be the founder of Gravity Falls! And his entire family legacy is a fraud! I believe the proof of this secret is buried somewhere in the enclosed document.If only i could crack the code"

- Irrational Treasure '''

Height Alteration
'''"Legends telling of miniature buffalo and giant squirrels have lead me to believe that there are height altering properties buried deep within the forest..."

- Little Dipper '''

Dipper's Page
"Finally back safe and sound from one of the weirdest days at Gravity Falls. This journal told me there was no one in Gravity Falls I could trust, but when you battle a hundred gnomes side-by-side with someone, you realize that they've probably always got your back."

- Tourist Trapped

Maze Page
Maze page appears in the episode "Little Dipper", when Dipper is searching for the Height Alteration. In the page, there's some codes. Down below on the page, there's a binary, and the binary code is: "0100101000011010", it means 'J'. There's no text on the page.

Gremloblin
If you look into his eyes you can see your worst nightmares. "When fighting a gremloblin use water [next page] but only as a last result as water will make him much much scarier."

- Boss Mabel

Truth telling teeth
'''"Buried 'neath the tree stump in the deep forest are Truth Teeth. Which force upon the wearer the inability to lie."

- Bottomless Pit! '''

Bill Cipher
Left page: "Beware Bill. The most powerful and dangerous creature I've ever encountered. Whatever you do, never let him into your mind."

- Dreamscaperers

Right page: "It is possible to follow the demon into a person's mind and prevent his chaos. DO NOT SUMMON AT ALL COSTS."

- Dreamscaperers

Following page: "One must simply recite this incantation: Fidentus omnium. Magister mentium. Magnesium ad hominem. Magnum opus. Habeas corpus. Inceptus Nolanus overratus. Magister mentium. Magister mentium. Magister mentium."

- Dreamscaperers

Other Items
Just inside the front cover, the book has an eyepeice (possibly a monocle) or small magnifying glass attached to it via a cord. Its purpose is unknown and it has been used as a bookmark by Dipper in "Irrational Treasure".

Appearance
Book 3 has the main color of burgundy and has various rips and tears on the cover due to age, it has two gold lines on its spine and all four of its corners are gold. In the middle of the book there is a gold hand with six fingers and on the palm is the number 3.

Trivia
.
 * Considering the books (3 in Dipper's possession and 2 in Gideon's possession) have a number 3 and 2 on the cover, and there is a third book labeled 1 somewhere.
 * In an early promo that aired on Disney Channel, the gnome page had a creepier but more accurate drawing of a gnome.
 * The hand on the cover has alternated from six to five fingers.
 * Random alchemist symbols of "fusion," "pulverize," "solution," "dryness," "extraction," "composition," "digestion," "coagulation," "reverberation," and "reduction" appear throughout the pages.
 * Dipper's handwritten page is the only revealed page to have lines on it.
 * On the page beside Dipper's page, you can see half a drawing of a bumper sticker Mabel was selling in "Boss Mabel".
 * Interestingly, both 3 and 2 have pages on zombies as seen and heard in "Tourist Trapped" and "Little Dipper", respectively.
 * 3 shows signs of neglect that show of its storage in a tree. When it was first seen, it was layered with dust, and 2 has small tears on the cover, while 3 is in a worse state, as it has larger tears.