Hazelmere's words will not be coherent to the player.
After translating what he says via the book (this is not actually necessary, as the answers are below), the player will need to repeat the message to the King back at the Stronghold.
The message from Hazelmere says:
human came with kings seal
gave human daconia rock
daconia rocks will kill tree
Go to Glough's house and use the key on the chest to get another Tree gnome translation book and Glough's notes.
Take the items to the king.
Pebbles[]
The king will still not trust your "proof" and will give you four pebbles found in Glough's possession.
Take these stones to the Watch tower above Glough's house and use the stones on the stone stand.
The order from left to right is ho-ni-:::-ha which spells "open".
Before continuing, prepare to fight a level 175 Black demon.
Black Demon[]
After preparing for the fight, return to the watch tower above Glough's house, and press down on the stone stand and select the climb option to go underground.
Glough will now summon a black demon to attack you. Kill the demon before it disappears (4:10 minutes or 250 seconds)
After the demon is killed, find the King north in the tunnel.
(Note: You will only be able to talk to the king in the tunnel; back in the tree he will not speak to you.)
Daconia rock[]
After some conversation, you will be prompted to look for the daconia rock. It is located by searching the roots southwest of the king.
While there is a warrant out for your arrest, you cannot leave via the Gnome stronghold gate. However, if you leave through any other method, you can simply walk through the gates, entering into the stronghold without any difficulty. At least, until you get the invoice from the Shipyard foreman.
While talking with the Shipyard foreman, he reveals that the plan is "take over RuneScape". In RS2, the world is later referred to as Gielinor.
After players get the invoice, they are stopped from entering the Gnome stronghold gate. However, they may freely leave through them.
Players gain 7.5 Agility XP and 0.13% fatigue every time they climb up Glough's watchtower.