-- go talk to Dylan; he'll give you the other half of the puzzle, which is automatically combined with the first half in your inventory.
Hint 3
When you look at them in inventory, what you see is ... well, confusing. Read to the end of this hint for the answer to the puzzle.
Hint 4
What you're doing here is putting one letter in each box to make a word in the middle of the line. For example, the last line in the first column is OIDOM_MMYTH. If you put a U in the empty space, it becomes OIDOMUMMYTH -- and do you see the "mummy" in the middle there?
Hint 5
All the words created will be more or less relevant to this situation. That is, you won't find "apple" or "origami," but you will find all kinds of things having to do with Egypt and archaeology.
Hint 6
All the same, some of the words are a little odd. You might want to start with the obvious ones, then juggle the remaining letters around until you discover the words.