Ant Researcher

The Ant Researcher can be found (usually dead) at Shalebridge. His corpse has a Big Book of Science.

The Ant Researcher respawns every 73 hours (with a new book). Usually when he respawns he is alive, fighting an ant, but you can kill him with no karma penalty and take the book from his corpse. Note: you may actually have to walk through the water to get his corpse to come to the surface. If he's submerged you won't be able to see him.

How to farm the Science Book (Xbox 360)
(OR How to get around the Shalebridge Tunnel freeze glitch) NOTES
 * 1) Load the last save that let you into Shalebridge Tunnels
 * 2) Save outside of the tunnels
 * 3) Try to enter the tunnels
 * 4) If it freezes, restart at #1
 * 5) Exit, enter, and exit Tunnels (so that zone is insta-load)
 * 6) Wait 73 hrs for Ant Researcher to respawn (if you just killed him)
 * 7) Save before entering
 * 8) Enter tunnels, (kill and) loot ant researcher, exit tunnels
 * 9) Repeat this list starting at #2 as desired
 * 10) you may want to at least do steps 2-4 to make sure you can re-enter before moving on
 * Do not overwrite saves... make 1000 if you have to
 * Always wait for all Autosave and zone notifications to go away before saving/waiting/zoning
 * The key to this whole nonsense is to make sure that:
 * an AUTO save is not the top save listed before you enter the tunnels
 * or at least the zone is insta-load
 * This may not be the least number of steps that work, but this worked consistently for me (Xethan).
 * Turning off Autosave does NOT prevent the freezing. It will still freeze once the player enters the tunnels.
 * The game may sometimes freeze right before the researcher dies.